{"title":"Seacocks \u0026 Ball Valves","description":null,"products":[{"product_id":"sierra-18-99546-check-valve-assembly-for-marine-oil-change-pumps","title":"Sierra Check Valve Assembly 18-99546, Cross Reference 551-33cv, for Marine Oil Change Pumps","description":"\u003cp\u003eThe Sierra 18-99546 Check Valve Assembly is a replacement check valve built for marine oil change pumps, the type used to extract used engine oil from a boat's crankcase during routine oil changes. The check valve is the internal component that allows oil to flow in one direction through the pump while preventing backflow, so the pump can draw oil out of the engine efficiently on each stroke or cycle. A worn or cracked check valve is a common cause of a marine oil change pump losing suction or failing to draw oil at all, and replacing the valve assembly restores proper pump function without having to replace the entire pump. This assembly is sold as a single complete unit, so installation is a straightforward swap of the worn valve for a new one. It is cross-referenced to the CDI Electronics 551-33cv, making it a suitable replacement for pumps that originally used that part. Boat owners performing their own annual oil changes, or servicing a pump that has started losing prime, can use this valve assembly to get their existing oil change pump back into working order rather than purchasing a new pump outright.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Sierra\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number:\u003c\/strong\u003e 18-99546\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Name:\u003c\/strong\u003e Check Valve Assembly\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCategory:\u003c\/strong\u003e Marine Oil Change Pumps\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.3 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 736983856203\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUnit Count:\u003c\/strong\u003e 1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCross Reference:\u003c\/strong\u003e 551-33cv (CDI Electronics)\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e551-33cv\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat is the Sierra 18-99546 Check Valve Assembly used for?\u003c\/strong\u003e It is a check valve assembly for marine oil change pumps, controlling one-way oil flow so the pump can draw used oil out of an engine's crankcase during an oil change.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-99546 compatible with CDI Electronics 551-33cv pumps?\u003c\/strong\u003e Yes, the 18-99546 is cross-referenced to the CDI Electronics 551-33cv, so it can be used as a replacement valve assembly on pumps that call for that part.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the 18-99546 check valve assembly weigh?\u003c\/strong\u003e The Sierra 18-99546 Check Valve Assembly weighs 0.3 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow many check valves come in one 18-99546 package?\u003c\/strong\u003e One complete check valve assembly is included per unit, ready to install as a direct replacement.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy would my marine oil change pump lose suction?\u003c\/strong\u003e A worn or cracked check valve, like the one replaced by the Sierra 18-99546, is a common cause of an oil change pump losing suction or failing to draw oil.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan I replace just the check valve instead of the whole oil change pump?\u003c\/strong\u003e Yes, the Sierra 18-99546 Check Valve Assembly lets you replace the failed valve component on its own rather than buying an entirely new oil change pump.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-99546 an OEM part or aftermarket?\u003c\/strong\u003e The 18-99546 is a Sierra-branded replacement part cross-referenced to the CDI Electronics 551-33cv, sold as an aftermarket equivalent for that valve.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the UPC for the Sierra 18-99546 Check Valve Assembly?\u003c\/strong\u003e The UPC for the Sierra 18-99546 Check Valve Assembly is 736983856203.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the 18-99546 check valve require any special tools to install?\u003c\/strong\u003e The 18-99546 is a complete valve assembly designed as a direct swap for the existing check valve in a compatible oil change pump.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat category of marine equipment does the 18-99546 belong to?\u003c\/strong\u003e The Sierra 18-99546 Check Valve Assembly is listed under marine oil change pumps and their replacement components.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988446163163,"sku":"SIE-18-99546","price":27.94,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/CDI-551-33CV_lg__66931.1558112053.500.750.jpg?v=1785188454"},{"product_id":"moeller-marine-033801-10-brass-anti-siphon-valve-3-8-in-barb-x-1-4-npt-30-calibration","title":"Moeller Brass Anti-Siphon Valve, 3\/8 In. Barb x 1\/4 In. NPT, 30 Calibration, Part 033801-10","description":"\u003cp\u003eThe Moeller 033801-10 is a brass anti-siphon valve built for permanent marine fuel tank installations. It combines anti-siphon protection with a hose barb connection, sealing the fuel line so fuel cannot siphon out of the tank if the line is cut or disconnected below the fuel level. Federal law requires anti-siphon protection on permanent fuel tank installations where the hose dips below the top of the tank, making a valve like this a required safety component rather than an optional accessory.\u003c\/p\u003e\u003cp\u003eThis valve is configured with a 3\/8 inch hose barb on one end and a 1\/4 inch NPT threaded connection on the other, with a 30 calibration rating. It installs inline between the fuel tank outlet and the fuel line, and is sized to match Moeller's broader anti-siphon valve lineup, which is offered in multiple barb and thread combinations so boat owners can match the exact port and hose size on their tank.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Moeller\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number:\u003c\/strong\u003e 033801-10\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Anti-Siphon Valve\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Brass\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBarb Size:\u003c\/strong\u003e 3\/8 inch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Size:\u003c\/strong\u003e 1\/4 inch NPT\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Type:\u003c\/strong\u003e NPT\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCalibration:\u003c\/strong\u003e 30\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConnector Type:\u003c\/strong\u003e Barb\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eItem Dimensions:\u003c\/strong\u003e 6 x 2.5 x 1.25 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.1 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 739729338018\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cp\u003eUniversal fit for permanent marine fuel tank installations using a 3\/8 inch barb to 1\/4 inch NPT connection; confirm your tank's port thread and hose size before ordering.\u003c\/p\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat is the Moeller 033801-10 used for?\u003c\/strong\u003e The Moeller 033801-10 is a brass anti-siphon valve installed inline on a permanent marine fuel tank to prevent fuel from siphoning out of the tank if the fuel line is cut or disconnected below the fuel level.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs anti-siphon protection legally required on my boat?\u003c\/strong\u003e Federal law requires anti-siphon protection on permanent fuel tank installations where the fuel hose dips below the top of the tank, which is the exact condition the 033801-10 valve is designed to address.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat size hose and fitting does part 033801-10 use?\u003c\/strong\u003e This valve has a 3\/8 inch hose barb on one end and a 1\/4 inch NPT threaded connection on the other, with a 30 calibration rating.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat material is the 033801-10 anti-siphon valve made of?\u003c\/strong\u003e The 033801-10 is made of brass.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the 033801-10 anti-siphon valve weigh?\u003c\/strong\u003e It weighs 0.1 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat are the dimensions of the 033801-10 valve?\u003c\/strong\u003e The item measures 6 x 2.5 x 1.25 inches.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes Moeller make this anti-siphon valve in other barb and thread sizes?\u003c\/strong\u003e Yes, Moeller offers this style of anti-siphon valve in several barb and thread combinations, so the 033801-10's 3\/8 inch barb by 1\/4 inch NPT configuration should be matched against your tank's actual port and hose size before ordering.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan the 033801-10 be used on a non-permanent or portable fuel tank?\u003c\/strong\u003e The 033801-10 anti-siphon valve is intended for permanent fuel tank installations, which is the installation type federal anti-siphon requirements apply to.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat calibration rating does the 033801-10 have?\u003c\/strong\u003e The 033801-10 has a 30 calibration rating.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the 033801-10 a genuine Moeller part?\u003c\/strong\u003e Yes, part number 033801-10 is a genuine Moeller Marine anti-siphon valve, not an aftermarket equivalent.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow does an anti-siphon valve like the 033801-10 work?\u003c\/strong\u003e It combines a check-valve style anti-siphon mechanism with a hose barb fitting, sealing the line so fuel cannot flow backward out of the tank if the fuel hose is compromised below the fuel level.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat connection type does the 033801-10 have on the tank side?\u003c\/strong\u003e The 033801-10 connects to the tank side using a 1\/4 inch NPT thread, with a 3\/8 inch barb on the hose side.\u003c\/p\u003e","brand":"Moeller Marine","offers":[{"title":"Default Title","offer_id":48991089033435,"sku":"MOE-033801-10","price":13.91,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/MOE-033801-10_lg__77828.1558115497.500.750.jpg?v=1785189061"},{"product_id":"moeller-033807-10-anti-siphon-valve-3-8-in-hose-barb-x-1-4-in-npt-brass-30-calibration","title":"Moeller 033807-10 Brass Anti-Siphon Valve, 3\/8 Inch Barb x 1\/4 NPT, 30 Calibration","description":"\u003cp\u003eThe Moeller 033807-10 is a brass anti-siphon valve built for permanent marine fuel tank installations. It combines anti-siphon protection with a convenient hose barb design, fitting a 3\/8 inch hose barb on one side and a 1\/4 NPT threaded connection on the other. Federal law requires anti-siphon protection on permanent fuel tank installations whenever the fuel hose dips below the top of the tank, and this valve is designed to meet that requirement while keeping the fuel line connection simple to plumb.\u003c\/p\u003e\u003cp\u003eThis valve is rated at 30 Calibration, which yields 30 inches of vertical height protection, meaning it is engineered to hold back fuel siphoning up to that head height in the fuel line. The brass construction is built to stand up to continuous exposure to marine fuel and the onboard environment. Installation is straightforward: the 1\/4 NPT end threads into the fuel tank fitting or fuel line assembly, while the 3\/8 inch barb end accepts standard 3\/8 inch fuel hose secured with a hose clamp.\u003c\/p\u003e\u003cp\u003eThe Moeller 033807-10 is sold as a single valve and is identified by its own model number, distinct from Moeller's other anti-siphon valve calibrations that use different barb and NPT thread combinations. Always confirm the barb size and NPT thread size needed for your fuel system before ordering, since anti-siphon valves are not interchangeable across sizes.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Moeller\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number:\u003c\/strong\u003e 033807-10\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHose Barb Size:\u003c\/strong\u003e 3\/8 inch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNPT Thread Size:\u003c\/strong\u003e 1\/4 NPT\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCalibration:\u003c\/strong\u003e 30 Calibration (30 inches vertical height protection)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Brass\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage Dimensions:\u003c\/strong\u003e 4.61 x 1.65 x 1.02 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.1 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 739729011140\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat does the Moeller 033807-10 anti-siphon valve connect to?\u003c\/strong\u003e One end is a 3\/8 inch hose barb for standard fuel hose, and the other end is a 1\/4 NPT threaded connection, so the 033807-10 links a 3\/8 inch fuel line to a 1\/4 NPT fitting on the tank or fuel system.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs an anti-siphon valve required on my boat's fuel tank?\u003c\/strong\u003e Federal law requires anti-siphon protection on permanent fuel tank installations if the fuel hose dips below the top of the tank, which is the situation the Moeller 033807-10 is designed to address.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the calibration rating of the 033807-10 valve?\u003c\/strong\u003e The 033807-10 is rated at 30 Calibration, which yields 30 inches of vertical height protection in the fuel line.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat material is the Moeller 033807-10 made from?\u003c\/strong\u003e This anti-siphon valve is made from brass.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow is the Moeller 033807-10 different from Moeller's other anti-siphon valves?\u003c\/strong\u003e Moeller offers anti-siphon valves in multiple barb and NPT thread combinations; the 033807-10 specifically uses a 3\/8 inch barb with a 1\/4 NPT thread and a 30 Calibration rating, while other part numbers in the line use different barb sizes, thread sizes, or calibration ratings.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat are the package dimensions of the 033807-10?\u003c\/strong\u003e The Moeller 033807-10 anti-siphon valve has package dimensions of 4.61 x 1.65 x 1.02 inches.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the Moeller 033807-10 weigh?\u003c\/strong\u003e The 033807-10 weighs 0.1 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow do I install the Moeller 033807-10 anti-siphon valve?\u003c\/strong\u003e The 1\/4 NPT end threads into the tank fitting or fuel line assembly, and 3\/8 inch fuel hose is fitted over the barb end and secured with a hose clamp.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the Moeller 033807-10 combine anti-siphon protection with a hose barb design?\u003c\/strong\u003e Yes, the 033807-10 combines anti-siphon protection with a convenient hose barb design in a single valve.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the UPC for the Moeller 033807-10?\u003c\/strong\u003e The Moeller 033807-10 anti-siphon valve carries UPC 739729011140.\u003c\/p\u003e","brand":"Moeller Marine","offers":[{"title":"Default Title","offer_id":48991089098971,"sku":"MOE-033807-10","price":19.16,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/033807-10__19890.1722507546.500.750.jpg?v=1785188996"},{"product_id":"moeller-033808-10-anti-siphon-valve-brass-3-8-in-barb-x-3-8-in-npt-15-calibration-for-200-hp-gasoline-fuel-systems","title":"Moeller Anti-Siphon Valve 033808-10, 3\/8 Inch Barb x 3\/8 Inch NPT, Brass, 15 Calibration","description":"\u003cp\u003eThe Moeller 033808-10 is a brass anti-siphon valve built to combine anti-siphon protection with a convenient hose barb design. Federal law requires anti-siphon protection on permanent fuel tank installations if the hose dips below the top of the tank, and this valve is designed to meet that requirement while providing a secure connection point between the fuel line and the tank fitting. It features a 3\/8 inch hose barb outlet paired with a 3\/8 inch NPT (National Pipe Tapered) threaded inlet, giving installers a threaded connection on one side and a barbed hose connection on the other.\u003c\/p\u003e\u003cp\u003eThis valve carries a 15 Calibration, which yields 15 inches of vertical height protection and is intended for use on engines rated 200 horsepower and above. It is constructed of brass with a brass exterior finish, has 2 ports, and is rated for a maximum operating pressure of 200 pounds per square inch. The valve meets ABYC H-24 specification. It is a straightforward, drop-in style component for boat builders and repair technicians installing or replacing anti-siphon protection on gasoline-powered boats with permanent fuel tanks.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Moeller\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number:\u003c\/strong\u003e 033808-10\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Anti-Siphon Valve\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Brass\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBarb Size:\u003c\/strong\u003e 3\/8 inch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNPT Thread Size:\u003c\/strong\u003e 3\/8 inch NPT\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Type:\u003c\/strong\u003e National Pipe Tapered\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConnector Type:\u003c\/strong\u003e Threaded, Barb\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Ports:\u003c\/strong\u003e 2\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCalibration:\u003c\/strong\u003e 15 Calibration (15 inch vertical height protection)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum Operating Pressure:\u003c\/strong\u003e 200 pounds per square inch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRecommended Engine Power:\u003c\/strong\u003e 200 HP and above\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecification Met:\u003c\/strong\u003e ABYC H-24\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eItem Dimensions:\u003c\/strong\u003e 2.05 x 5.65 x 1.1 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.15 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFinish:\u003c\/strong\u003e Brass\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 739729011157\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat is the Moeller 033808-10 used for?\u003c\/strong\u003e The Moeller 033808-10 is a brass anti-siphon valve installed in the fuel line to prevent fuel from siphoning out of a permanent fuel tank if the hose is damaged, a requirement under federal law when the hose dips below the top of the tank.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat size fittings does the 033808-10 have?\u003c\/strong\u003e This valve has a 3\/8 inch hose barb outlet and a 3\/8 inch NPT threaded inlet, with National Pipe Tapered threads on the threaded side.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the calibration rating on this valve?\u003c\/strong\u003e The 033808-10 carries a 15 Calibration, which yields 15 inches of vertical height protection and is intended for engines rated 200 horsepower and above.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat material is the Moeller 033808-10 made of?\u003c\/strong\u003e It is made of brass, including the exterior finish, giving it corrosion resistance suited to marine fuel system use.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the maximum operating pressure of this anti-siphon valve?\u003c\/strong\u003e The 033808-10 is rated for a maximum operating pressure of 200 pounds per square inch.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the Moeller 033808-10 weigh?\u003c\/strong\u003e The Moeller 033808-10 anti-siphon valve weighs 0.15 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat are the dimensions of the 033808-10 valve?\u003c\/strong\u003e Item dimensions for the 033808-10 are 2.05 x 5.65 x 1.1 inches.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes this valve meet any industry standards?\u003c\/strong\u003e Yes, the Moeller 033808-10 meets ABYC H-24 specification for anti-siphon protection.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow many ports does the 033808-10 have?\u003c\/strong\u003e The valve has 2 ports, one threaded NPT connection and one barbed hose connection.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs an anti-siphon valve like the 033808-10 legally required?\u003c\/strong\u003e Federal law requires anti-siphon protection on permanent fuel tank installations if the hose dips below the top of the tank, which the 033808-10 is designed to provide.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the difference between the 033808-10 and Moeller's other calibration valves?\u003c\/strong\u003e The 033808-10 uses a 3\/8 inch barb and 3\/8 inch NPT connection with a 15 Calibration for engines 200 HP and above, differing in barb\/thread size and calibration from Moeller's other anti-siphon valve variants.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat connection type does the 033808-10 use?\u003c\/strong\u003e The 033808-10 uses a combination threaded and barb connector type, with NPT threads on one end and a hose barb on the other.\u003c\/p\u003e","brand":"Moeller Marine","offers":[{"title":"Default Title","offer_id":48991089295579,"sku":"MOE-033808-10","price":21.32,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/033807-10__24174.1722378677.500.750.jpg?v=1785188646"},{"product_id":"t-h-marine-ils-1200-double-barb-inline-scupper-check-valve-1-1-8-in-marine-hose-black","title":"T-H Marine ILS-1200 Double Barb Inline Scupper Check Valve, 1-1\/8 Inch Hose, Black","description":"\u003cp\u003eThe T-H Marine ILS-1200 is a double barb inline scupper check valve built to fit 1-1\/8 inch marine hose. It installs directly into the drain line to provide check valve protection at any point along the run, letting you use standard thru-hull fittings in the cockpit and on the hull exterior rather than requiring a dedicated flapper-style thru-hull. The core function is to prevent backwash: water and spray that would otherwise push back up through the scupper drain is stopped by an internal thermo-plastic flapper, while normal drainage flow out of the boat continues unrestricted.\u003c\/p\u003e\u003cp\u003eThe body is built from chemical resistant materials, making it suitable for continued exposure to bilge water, saltwater spray, and onboard cleaning chemicals without breaking down. The double barb design gives a secure hose connection on both the inlet and outlet sides, so the valve can be clamped inline into an existing scupper drain hose run rather than mounted at the hull. It is finished in black to blend with standard marine hose and fittings.\u003c\/p\u003e\u003cp\u003eThis 1-1\/8 inch hose version is part of a size family that also includes 3\/4 inch and 1-1\/2 inch hose versions, each sold under its own part number, so it is important to confirm hose inside diameter before ordering.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e T-H Marine\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number:\u003c\/strong\u003e ILS-1200\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Inline Scupper Check Valve (Double Barb)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHose Size:\u003c\/strong\u003e 1-1\/8 inch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColor:\u003c\/strong\u003e Black\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Chemical resistant body with thermo-plastic flapper\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOutside Diameter:\u003c\/strong\u003e 1.13 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage Dimensions:\u003c\/strong\u003e 8.82 inches L x 5.2 inches W x 4.41 inches H\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.3 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 733572065008\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandard Pack:\u003c\/strong\u003e 50 per box\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat size hose does the T-H Marine ILS-1200 fit?\u003c\/strong\u003e The ILS-1200 is built for 1-1\/8 inch marine hose; T-H Marine also makes a 3\/4 inch version and a 1-1\/2 inch version under different part numbers, so hose inside diameter should be confirmed before ordering.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat does this scupper check valve actually do?\u003c\/strong\u003e It prevents backwash by blocking water from pushing back up through the scupper drain line while still allowing normal drainage to flow out, using an internal thermo-plastic flapper inside the ILS-1200 body.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan I use this instead of a flapper-style thru-hull fitting?\u003c\/strong\u003e Yes, the ILS-1200 is designed to let you use standard thru-hull fittings in the cockpit and on the hull exterior instead of a dedicated flapper thru-hull, since the check valve function is built into the inline fitting itself.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the ILS-1200 made from?\u003c\/strong\u003e The body uses chemical resistant materials and the internal flapper is thermo-plastic, materials chosen to hold up to bilge water, saltwater, and onboard cleaning chemicals.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat color is this valve?\u003c\/strong\u003e The ILS-1200 double barb inline scupper check valve is black.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the ILS-1200 weigh?\u003c\/strong\u003e The T-H Marine ILS-1200 weighs 0.3 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat are the outer dimensions of this fitting?\u003c\/strong\u003e The ILS-1200 has an outside diameter of 1.13 inches, and ships in packaging measuring 8.82 inches by 5.2 inches by 4.41 inches.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the ILS-1200 have barbs on both ends?\u003c\/strong\u003e Yes, it is a double barb design, meaning both the inlet and outlet sides have hose barbs so it can be clamped inline into an existing drain hose run.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow is the ILS-1200 installed?\u003c\/strong\u003e It installs inline in the scupper drain hose, with the hose slid over the barb on each end and secured with hose clamps at the connection points.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs there a smaller or larger version of this check valve?\u003c\/strong\u003e Yes, T-H Marine offers this same double barb inline scupper check valve for 3\/4 inch hose and for 1-1\/2 inch hose, each under a different part number than the ILS-1200.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the UPC for the T-H Marine ILS-1200?\u003c\/strong\u003e The UPC for the T-H Marine ILS-1200 inline scupper check valve is 733572065008.\u003c\/p\u003e","brand":"T-H Marine","offers":[{"title":"Default Title","offer_id":48991264178395,"sku":"T-H-ILS-1200","price":22.88,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/inline-scupper-check-valves-28008765030443_2dfba68b-3a55-4551-b031-79d866fa0e93.jpg?v=1784498615"},{"product_id":"camco-brass-water-heater-drain-valve-1-2-inch-npt","title":"Camco Brass Water Heater Drain Valve, 1\/2 Inch NPT","description":"\u003cp\u003eThe Camco Brass Water Heater Drain Valve is a screw-on replacement drain valve built to restore a watertight seal on a water heater that has a worn or leaking factory valve. It is constructed from premium 2010-compliant brass, a lead-free-grade brass formulation, so it resists corrosion while providing a durable, long-term seal. The valve is fitted with an easy-twist handle for simple opening and closing when draining the tank, and it installs with standard 1\/2 inch NPT male threads for a secure, leak-resistant connection to the water heater fitting.\u003c\/p\u003e\u003cp\u003eThis valve is rated for a maximum working pressure of 150 psi and a maximum working temperature of 210 degrees Fahrenheit, matching the demands of a residential-style water heater drain port. It measures 5.5 inches in height, 3.63 inches in width, and 0.87 inches in length, and it is meant for indoor use. Whether you are replacing a cracked plastic drain valve or upgrading to a sturdier brass design, the Camco Brass Water Heater Drain Valve, part number 11703, is a straightforward swap that restores reliable draining and winterizing performance to your water heater.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Camco\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number:\u003c\/strong\u003e 11703\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e 2010-compliant brass\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Size:\u003c\/strong\u003e 1\/2 inch NPT male threads\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eValve Type:\u003c\/strong\u003e Screw-on drain valve with easy-twist handle\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum Pressure:\u003c\/strong\u003e 150 psi\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum Working Temperature:\u003c\/strong\u003e 210 degrees Fahrenheit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeight:\u003c\/strong\u003e 5.5 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWidth:\u003c\/strong\u003e 3.63 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLength:\u003c\/strong\u003e 0.87 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.138 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRecommended Use:\u003c\/strong\u003e Indoor use\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 014717117036\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat size threads does the Camco 11703 drain valve have?\u003c\/strong\u003e The Camco 11703 drain valve has 1\/2 inch NPT male threads, letting it screw directly into a standard water heater drain port.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs this drain valve made of brass or plastic?\u003c\/strong\u003e It is made from 2010-compliant brass, not plastic, which gives the Camco 11703 valve better resistance to corrosion and wear than a stock plastic drain valve.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the maximum pressure this valve can handle?\u003c\/strong\u003e 150 psi is the maximum rated pressure for the Camco Brass Water Heater Drain Valve.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the maximum temperature rating?\u003c\/strong\u003e The valve is rated to a maximum working temperature of 210 degrees Fahrenheit, part number 11703.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan I use this valve outdoors?\u003c\/strong\u003e No, the Camco 11703 drain valve is meant for indoor use.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat are the dimensions of the Camco 11703 valve?\u003c\/strong\u003e It measures 5.5 inches in height, 3.63 inches in width, and 0.87 inches in length.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does this drain valve weigh?\u003c\/strong\u003e The Camco Brass Water Heater Drain Valve weighs 0.138 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the valve have a handle for opening and closing it?\u003c\/strong\u003e Yes, an easy-twist handle is built into the Camco 11703 valve so it can be opened and closed by hand without extra tools.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs installation difficult?\u003c\/strong\u003e Installation is straightforward: the Camco 11703 valve is a screw-on design that threads into the existing 1\/2 inch NPT drain port on the water heater.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy replace my water heater drain valve with this brass version?\u003c\/strong\u003e Brass construction on the Camco 11703 gives a more durable, watertight replacement for a worn or cracked factory drain valve, particularly plastic valves that are prone to cracking.\u003c\/p\u003e","brand":"Camco","offers":[{"title":"Default Title","offer_id":49027482714331,"sku":"CAM-11703","price":8.19,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/cam-11703_lg__73991.1722488788.500.750.jpg?v=1785163589"},{"product_id":"groco-ibvl-1500-1-1-2-inch-npt-bronze-inline-locking-valve-with-locking-handle","title":"Groco IBVL-1500 1-1\/2 Inch NPT Bronze Inline Locking Valve with Locking Handle","description":"\u003cp\u003eThe Groco IBVL-1500 is a 1-1\/2 inch NPT bronze inline locking valve built for shutting off fuel or water lines aboard a boat. The valve body is constructed of C83600 bronze for corrosion resistance, with a chrome plated solid brass ball and PTFE seats and seals to maintain a tight, full flow shutoff over time. Female NPT threads on both ends allow it to be plumbed directly inline with matching bronze fittings and hose.\u003c\/p\u003e\u003cp\u003eThe stainless steel handle and hardware are designed for durability in a marine environment, and the handle itself has a square hole that accepts a standard ratchet, making it easier to actuate the valve in tight or hard to reach locations where a hand alone cannot get enough leverage. The valve also offers selectable handle rotation, so the handle orientation can be set to suit the installation. It is UL listed for use with fuel or water, and it fits the Groco IBVF fitting for seacock applications.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Groco\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number:\u003c\/strong\u003e IBVL-1500\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Inline Locking Valve\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Size:\u003c\/strong\u003e 1-1\/2 inch NPT\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Type:\u003c\/strong\u003e Female NPT\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBody Material:\u003c\/strong\u003e C83600 Bronze\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHandle Material:\u003c\/strong\u003e Stainless Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHardware Material:\u003c\/strong\u003e Stainless Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBall Material:\u003c\/strong\u003e Chrome Plated Solid Brass\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeats and Seals:\u003c\/strong\u003e PTFE\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHandle Feature:\u003c\/strong\u003e Square hole accepts a standard ratchet\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHandle Rotation:\u003c\/strong\u003e Selectable\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCertification:\u003c\/strong\u003e UL Listed for Fuel or Water\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Fits Groco IBVF for seacock application\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlow Type:\u003c\/strong\u003e Full Flow\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 3.8 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 742985144927\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat size is the Groco IBVL-1500 valve?\u003c\/strong\u003e The IBVL-1500 is a 1-1\/2 inch NPT valve with female threads on both ends, built for inline installation in a fuel or water line.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the IBVL-1500 rated for fuel or just water?\u003c\/strong\u003e It is UL listed for use with either fuel or water, so the same IBVL-1500 valve can be used on either type of line.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the valve body made of?\u003c\/strong\u003e The IBVL-1500 body is constructed of C83600 bronze, chosen for its corrosion resistance in marine service.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat material is the handle and hardware?\u003c\/strong\u003e The handle and hardware on the IBVL-1500 are stainless steel for durability aboard a boat.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the ball inside the valve made of?\u003c\/strong\u003e Inside the IBVL-1500, the ball is chrome plated solid brass, paired with PTFE seats and seals for a tight shutoff.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy does the handle have a square hole in it?\u003c\/strong\u003e The square hole in the IBVL-1500 handle accepts a standard ratchet, which gives extra leverage to operate the valve when it is mounted in a hard to reach location.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan the handle position be adjusted?\u003c\/strong\u003e Yes, the IBVL-1500 has selectable handle rotation so it can be set to the orientation that works best for the installation.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes this valve work with the Groco IBVF fitting?\u003c\/strong\u003e Yes, the IBVL-1500 fits the Groco IBVF for seacock applications.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the IBVL-1500 weigh?\u003c\/strong\u003e The Groco IBVL-1500 weighs 3.8 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the IBVL-1500 a full flow valve?\u003c\/strong\u003e Yes, the IBVL-1500 is a full flow inline locking valve, meaning it does not restrict flow when fully open.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat thread type does the IBVL-1500 use?\u003c\/strong\u003e The IBVL-1500 uses 1-1\/2 inch female NPT threads on both ports.\u003c\/p\u003e","brand":"Groco","offers":[{"title":"Default Title","offer_id":49027994353883,"sku":"GRO-IBVL-1500","price":120.92,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/IBVL-1500__28371.1722386345.500.750.jpg?v=1785164377"},{"product_id":"groco-ssc-1500-engine-flush-service-adapter-1-1-2-inch-seacock-fitting-for-winterizing-flushing-emergency-bilge-pumping","title":"Groco SSC-1500 Engine Flush Service Adapter - 1-1\/2 Inch Seacock Fitting for Winterizing, Flushing \u0026 Emergency Bilge Pumping","description":"\u003cp\u003eThe Groco SSC-1500 Engine Flush Service Adapter is a 1-1\/2 inch fitting that installs directly on top of any seacock, adding safety and flexibility to a boat's raw water system. It gives boaters a quick-access point for three common tasks: emergency bilge pumping, engine cooling system flushing, and winterization.\u003c\/p\u003e\u003cp\u003eFor emergency use, close the seacock and remove the quick release plug while the engine is running; excess bilge water is then pumped overboard through the engine's raw water pump (a Groco BSA can be added to pump out remote bilge locations). For winterization, close the seacock, remove the quick release plug, and insert the included service adapter so antifreeze can be pumped into the cooling system. For system flushing, close the seacock and insert the service adapter so dockside water can flush the cooling system with the engine running at idle speed.\u003c\/p\u003e\u003cp\u003eThe adapter has a 1-1\/2 inch hose ID and a 1-1\/2 inch NPT thread, with an overall length of 4.75 inches, and includes the service adapter plug as part of the kit. It is designed to work with any 1-1\/2 inch thru-hull seacock.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Groco\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number:\u003c\/strong\u003e SSC-1500\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHose ID:\u003c\/strong\u003e 1-1\/2 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Type:\u003c\/strong\u003e 1-1\/2 inch NPT\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length:\u003c\/strong\u003e 4.75 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 1.9 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIncluded Components:\u003c\/strong\u003e Engine Flush Kit, Service Adapter\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year limited warranty against defects in materials and workmanship\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\u003cli\u003eInstalls on top of any 1-1\/2 inch thru-hull seacock\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\u003cli\u003eNo OEM cross-reference numbers are listed for this part\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat is the Groco SSC-1500 used for?\u003c\/strong\u003e The Groco SSC-1500 Engine Flush Service Adapter installs on top of any 1-1\/2 inch seacock to allow emergency bilge pumping, cooling system flushing, and winterization without disconnecting the raw water plumbing.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat size seacock does the SSC-1500 fit?\u003c\/strong\u003e The SSC-1500 has a 1-1\/2 inch hose ID and a 1-1\/2 inch NPT thread, and it is designed to install on any 1-1\/2 inch thru-hull seacock.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow long is the SSC-1500 adapter?\u003c\/strong\u003e The Groco SSC-1500 has an overall length of 4.75 inches.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the SSC-1500 weigh?\u003c\/strong\u003e The SSC-1500 weighs 1.9 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow do I use the SSC-1500 for winterization?\u003c\/strong\u003e Close the seacock, remove the quick release plug, and insert the included service adapter so antifreeze can be pumped into the cooling system through the SSC-1500.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan I use the SSC-1500 for emergency bilge pumping?\u003c\/strong\u003e Yes. While the engine is running, close the seacock and remove the quick release plug on the SSC-1500; the engine's raw water pump will then pump excess bilge water overboard.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow do I flush the cooling system with the SSC-1500?\u003c\/strong\u003e Close the seacock and insert the service adapter, then run dockside water through the SSC-1500 to flush the cooling system with the engine running at idle speed.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is included with the Groco SSC-1500?\u003c\/strong\u003e The SSC-1500 kit includes the engine flush kit and the service adapter itself.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the SSC-1500 come with a warranty?\u003c\/strong\u003e Yes, the Groco SSC-1500 carries a 1-year limited warranty against defects in materials and workmanship.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the SSC-1500 a universal fit?\u003c\/strong\u003e The SSC-1500 fits any 1-1\/2 inch thru-hull seacock rather than a specific engine or boat model.\u003c\/p\u003e","brand":"Groco","offers":[{"title":"Default Title","offer_id":49027994452187,"sku":"GRO-SSC-1500","price":171.24,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/Untitled-4__26831.1763741621.500.750.jpg?v=1785164378"},{"product_id":"shurflo-in-line-check-valve-340-001-1-2-inch-barb-100-psi-back-surge-protection","title":"Shurflo In-Line Check Valve 340-001, 1\/2 Inch Barb, 100 PSI Back Surge Protection","description":"\u003cp\u003eThe Shurflo In-Line Check Valve (340-001) is a compact, single-direction water valve built for marine plumbing and water systems where back surge protection matters. It allows water to flow in only one direction, safeguarding pumps, fittings, and fixtures upstream from back surge pressure up to 100 PSI. Its small, low-profile body threads inline with 1\/2 inch barb connections on both ends, making it a straightforward addition to an existing hose run without major modification to the plumbing layout.\u003c\/p\u003e\u003cp\u003eConstruction is plastic, keeping the valve lightweight and corrosion-resistant in the wet, humid environment typical of boat bilges, livewell systems, and freshwater plumbing runs. The small footprint and barb-style ports mean installation is quick: cut into the existing hose line, push the barbed ends into place, and secure with standard hose clamps. Because it is a passive check valve with no moving parts to wire or power, there is nothing to program or maintain beyond periodic inspection of the hose connections.\u003c\/p\u003e\u003cp\u003eThis valve is a good fit anywhere a boat owner needs to stop backflow in a 1\/2 inch barbed water line, such as protecting a pump outlet or preventing siphon-back in a freshwater or livewell fill system. It ships ready to install with no additional hardware required beyond standard hose clamps.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Shurflo\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number:\u003c\/strong\u003e 340-001\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePort Size:\u003c\/strong\u003e 1\/2 inch Barb (13mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eValve Type:\u003c\/strong\u003e Check Valve (one-direction flow only)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum Operating Pressure:\u003c\/strong\u003e 100 PSI back surge protection\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Plastic\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Ports:\u003c\/strong\u003e 2\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Size:\u003c\/strong\u003e 1\/2 inch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConnector Type:\u003c\/strong\u003e Barb\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eItem Dimensions:\u003c\/strong\u003e 2.25 x 4.75 x 6.25 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.2 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 752324003341\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat does the Shurflo In-Line Check Valve 340-001 do?\u003c\/strong\u003e It allows water to flow in only one direction through a 1\/2 inch barbed line, safeguarding against back surge pressure up to 100 PSI.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat size hose does the 340-001 check valve fit?\u003c\/strong\u003e The valve has 1\/2 inch barb (13mm) ports on both ends, sized for standard 1\/2 inch marine water hose.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much back pressure can this check valve handle?\u003c\/strong\u003e Up to 100 PSI of back surge pressure, which is the maximum operating pressure rating for the Shurflo 340-001.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the Shurflo 340-001 check valve made of?\u003c\/strong\u003e It is made of plastic, chosen for its light weight and resistance to corrosion in wet marine environments.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow many ports does this check valve have?\u003c\/strong\u003e The Shurflo In-Line Check Valve has 2 ports, one inlet and one outlet, both sized at 1\/2 inch.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat are the dimensions of the 340-001 check valve?\u003c\/strong\u003e The valve measures 2.25 x 4.75 x 6.25 inches.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the Shurflo In-Line Check Valve weigh?\u003c\/strong\u003e It weighs 0.2 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Shurflo 340-001 check valve easy to install?\u003c\/strong\u003e Yes, its small size and barbed 1\/2 inch ports allow for quick, easy inline installation using standard hose clamps.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the check valve require power or wiring?\u003c\/strong\u003e No, the 340-001 is a passive mechanical check valve with no moving electrical parts and no wiring required.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat applications is this check valve used for?\u003c\/strong\u003e It is used in marine water systems, such as livewell fill lines and freshwater plumbing runs, to prevent backflow in 1\/2 inch barbed hose lines.\u003c\/p\u003e","brand":"Shurflo","offers":[{"title":"Default Title","offer_id":49029559156955,"sku":"SHU-340-001","price":18.32,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/shu-340-001_lg__72619.1558174898.500.750.jpg?v=1785165654"},{"product_id":"groco-bronze-tri-flanged-ball-valve-seacock-3-4-inch-npt-fbv-750","title":"Groco Bronze Tri-Flanged Ball Valve Seacock, 3\/4 Inch NPT (FBV-750)","description":"\u003cp\u003eThe Groco FBV-750 is a 3\/4 inch bronze tri-flanged ball valve seacock designed to control water flow through a thru-hull fitting below the waterline. Built from solid bronze, it provides corrosion resistance for continuous seawater and marine environment exposure, making it suitable for use as a below-waterline shutoff on intake or discharge thru-hull applications. The valve features a tri-flanged body with a full-bore ball valve mechanism for reliable open\/close operation, and its flanged design allows for secure mounting to the hull with multiple fastener points for added structural integrity compared to a single-flange design.\u003c\/p\u003e\u003cp\u003eThe FBV-750 has a 3\/4 inch National Pipe Tapered (NPT) inlet connection and a 3\/4 inch flanged outlet connection, with 2 total ports. The exterior finish is available in chrome or stainless steel. This seacock is intended for boat owners and marine technicians installing or replacing thru-hull shutoff valves where a durable, corrosion-resistant bronze ball valve is required.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Groco\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number:\u003c\/strong\u003e FBV-750\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Bronze\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eValve Type:\u003c\/strong\u003e Ball valve \/ seacock\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConnector Type:\u003c\/strong\u003e Flanged\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Ports:\u003c\/strong\u003e 2\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInlet Connection Size:\u003c\/strong\u003e 0.75 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInlet Connection Type:\u003c\/strong\u003e National Pipe Tapered (NPT)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOutlet Connection Size:\u003c\/strong\u003e 0.75 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOutlet Connection Type:\u003c\/strong\u003e Flange\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Size:\u003c\/strong\u003e 3\/4 inch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Type:\u003c\/strong\u003e NPT\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExterior Finish:\u003c\/strong\u003e Chrome, Stainless Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eItem Dimensions:\u003c\/strong\u003e 15 x 14.75 x 12 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 1.9 pounds\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cp\u003eUniversal 3\/4 inch NPT thru-hull application; no specific make, model, or year fitment is specified for this valve.\u003c\/p\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cp\u003eNo OEM cross-reference numbers are listed for this part.\u003c\/p\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat size is the Groco FBV-750 seacock?\u003c\/strong\u003e The Groco FBV-750 is a 3\/4 inch tri-flanged ball valve seacock with a 3\/4 inch NPT inlet connection and a 3\/4 inch flanged outlet connection.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the FBV-750 made of bronze?\u003c\/strong\u003e Yes, the FBV-750 tri-flanged ball valve seacock is made of solid bronze, with an available chrome or stainless steel exterior finish.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow many ports does the FBV-750 have?\u003c\/strong\u003e The FBV-750 has 2 ports, matching its inlet and outlet connections in a standard ball valve configuration.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat thread type does the FBV-750 use?\u003c\/strong\u003e NPT (National Pipe Tapered) thread is used on the FBV-750's 3\/4 inch inlet connection.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat are the dimensions of the FBV-750 seacock?\u003c\/strong\u003e The Groco FBV-750 measures 15 x 14.75 x 12 inches as a complete unit.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the FBV-750 weigh?\u003c\/strong\u003e The FBV-750 tri-flanged ball valve seacock weighs 1.9 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is a tri-flanged seacock used for?\u003c\/strong\u003e A tri-flanged seacock like the FBV-750 is installed at a below-waterline thru-hull to provide a shutoff valve for controlling water intake or discharge, with the flanged body providing multiple mounting points to the hull.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the FBV-750 come with mounting hardware or other components in the box?\u003c\/strong\u003e The dossier for the Groco FBV-750 does not specify included accessories beyond the valve unit itself.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat finish options are available for the FBV-750?\u003c\/strong\u003e The Groco FBV-750 is available with a chrome or stainless steel exterior finish.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the FBV-750 a full ball valve design?\u003c\/strong\u003e Yes, the FBV-750 is a ball valve\/seacock type, providing full on\/off shutoff control at the thru-hull.\u003c\/p\u003e","brand":"Groco","offers":[{"title":"Default Title","offer_id":49031096697051,"sku":"GRO-FBV-750","price":56.87,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/51e8mIaC-dL_14e5566a-6f4f-41d6-b7a1-df9cf6b5ad1d.jpg?v=1785208664"},{"product_id":"groco-bronze-vented-loop-hvl-1000-1-inch-hose-anti-siphon-valve","title":"GROCO Bronze Vented Loop HVL-1000, 1 Inch Hose Anti-Siphon Valve","description":"\u003cp\u003eThe GROCO HVL-1000 is a bronze vented loop built to accept 1 inch hose, designed to prevent siphoning and backflow in below-waterline plumbing runs such as head discharge, raw water washdown, and other through-hull applications where a loop must be installed above the waterline. Bronze construction resists corrosion in marine environments and provides long service life compared to plastic alternatives. The fitting measures 8 inches in length by 7 inches in width, with a 1 inch outside diameter and a nominal wall thickness of 0.125 inches, giving it the rigidity needed to hold its shape and seal reliably under vacuum and pressure conditions typical of onboard plumbing systems.\u003c\/p\u003e\u003cp\u003eInstalled at the high point of a hose run, the vented loop opens to atmosphere when the system loses vacuum, breaking any siphon before water can be drawn back through a through-hull fitting below the waterline. This is a critical safety component for preventing unwanted flooding in systems like marine heads. The GROCO HVL-1000 is compatible with standard 1 inch marine hose used throughout the boat's plumbing system.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Groco\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number:\u003c\/strong\u003e HVL-1000\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHose Size:\u003c\/strong\u003e 1 inch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOutside Diameter:\u003c\/strong\u003e 1 inch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNominal Wall Thickness:\u003c\/strong\u003e 0.125 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Length:\u003c\/strong\u003e 8 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Dimensions:\u003c\/strong\u003e 8 inches L x 7 inches W\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 1.9 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Bronze\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 742985003071\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat is the GROCO HVL-1000 used for?\u003c\/strong\u003e The HVL-1000 is a bronze vented loop that breaks siphon action in below-waterline hose runs, preventing water from being drawn back through a through-hull fitting into the boat.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat hose size does the HVL-1000 fit?\u003c\/strong\u003e This vented loop is sized for 1 inch hose, matching its 1 inch outside diameter.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat material is the HVL-1000 made from?\u003c\/strong\u003e Bronze, chosen for its corrosion resistance in marine plumbing applications.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the HVL-1000 weigh?\u003c\/strong\u003e The GROCO HVL-1000 weighs 1.9 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat are the dimensions of the HVL-1000 vented loop?\u003c\/strong\u003e It measures 8 inches in length by 7 inches in width, with a nominal wall thickness of 0.125 inches.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhere should a vented loop like the HVL-1000 be installed?\u003c\/strong\u003e Vented loops are installed at the highest point of a hose run, above the waterline, so they can open to atmosphere and break any siphon before it can pull water back into the boat.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the HVL-1000 made of plastic or metal?\u003c\/strong\u003e It is a bronze fitting, not plastic, giving it added durability and corrosion resistance over plastic vented loops.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is included when I order the HVL-1000?\u003c\/strong\u003e The HVL-1000 ships as the complete bronze vented loop fitting sized for 1 inch hose.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy does a marine head or through-hull system need a vented loop?\u003c\/strong\u003e Without a vented loop such as the HVL-1000, a loss of vacuum in a below-waterline hose run can allow water to siphon back through the through-hull, leading to unwanted flooding.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the HVL-1000 work with standard marine hose?\u003c\/strong\u003e Yes, it is designed to accept 1 inch marine hose commonly used in onboard plumbing systems.\u003c\/p\u003e","brand":"Groco","offers":[{"title":"Default Title","offer_id":49031097057499,"sku":"GRO-HVL-1000","price":181.7,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/61hZX4dBqnL.jpg?v=1785208672"},{"product_id":"groco-bronze-vented-loop-1-1-2-inch-hose-anti-siphon-valve","title":"GROCO Bronze Vented Loop, 1-1\/2 Inch Hose Anti-Siphon Valve","description":"\u003cp\u003eThe GROCO HVL-1500 is a bronze vented loop built for 1-1\/2 inch hose, designed to prevent backflow and siphoning in marine plumbing systems such as head discharge, cockpit drains, and other below-waterline hose runs. By introducing an air break at the highest point of the hose run, a vented loop like the HVL-1500 stops water from being siphoned back into the boat when the vessel heels or when water levels shift, which is a common cause of unwanted flooding through thru-hull plumbing.\u003c\/p\u003e\u003cp\u003eConstructed from plastic with a bronze finish, the HVL-1500 is sized for 1-1\/2 inch hose and is supplied as a single unit. It carries a nominal wall thickness of 0.125 inches and measures 8 inches by 7 inches. This fitting is intended to be installed in-line on hose runs where anti-siphon protection is required, and is compatible with standard 1-1\/2 inch marine hose.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e GROCO\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number:\u003c\/strong\u003e HVL-1500\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHose Size:\u003c\/strong\u003e 1-1\/2 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Plastic\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColor:\u003c\/strong\u003e Bronze\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Dimensions:\u003c\/strong\u003e 8 inches L x 7 inches W\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNominal Wall Thickness:\u003c\/strong\u003e 0.125 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eItem Length:\u003c\/strong\u003e 10 feet\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 2.8 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUnit Count:\u003c\/strong\u003e 1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 742985002715\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cp\u003eFits 1-1\/2 inch hose runs.\u003c\/p\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cp\u003eNo OEM cross-reference numbers are listed for the GROCO HVL-1500.\u003c\/p\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat size hose does the GROCO HVL-1500 vented loop fit?\u003c\/strong\u003e The GROCO HVL-1500 is sized for 1-1\/2 inch hose.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is a vented loop used for?\u003c\/strong\u003e A vented loop like the HVL-1500 creates an air break at the top of a hose run to stop water from being siphoned back through the plumbing, which helps prevent unwanted flooding on below-waterline hose runs.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat material is the HVL-1500 made from?\u003c\/strong\u003e The HVL-1500 is made from plastic with a bronze finish.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the GROCO HVL-1500 weigh?\u003c\/strong\u003e The HVL-1500 weighs 2.8 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat are the dimensions of the HVL-1500?\u003c\/strong\u003e The HVL-1500 measures 8 inches long by 7 inches wide.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the wall thickness of the HVL-1500?\u003c\/strong\u003e It has a nominal wall thickness of 0.125 inches.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow many units come in a package of the HVL-1500?\u003c\/strong\u003e The HVL-1500 is sold as a single unit (unit count of 1).\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the HVL-1500 replace a specific OEM part number?\u003c\/strong\u003e No OEM cross-reference or replacement part numbers are listed for the GROCO HVL-1500.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the GROCO HVL-1500 a genuine GROCO part?\u003c\/strong\u003e Yes, the HVL-1500 is a genuine GROCO product, identified by GROCO part number HVL-1500.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhere is a vented loop typically installed on a boat?\u003c\/strong\u003e Vented loops such as the HVL-1500 are typically installed in-line on below-waterline hose runs, including head discharge and other drain lines, at the highest point of the run.\u003c\/p\u003e","brand":"Groco","offers":[{"title":"Default Title","offer_id":49031097090267,"sku":"GRO-HVL-1500","price":207.2,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/61GL9xCG7wL.jpg?v=1785208673"},{"product_id":"groco-ibv-1500-bronze-in-line-ball-valve-1-1-2-inch-npt-chrome-plated","title":"GROCO IBV-1500 Bronze In-Line Ball Valve, 1-1\/2 Inch NPT, Chrome Plated","description":"\u003cp\u003eThe GROCO IBV-1500 is a bronze in-line ball valve built for marine thru-hull plumbing applications where a reliable on\/off shutoff is needed in a straight run of pipe or hose. It uses a two-port, quarter-turn ball design so the flow path can be fully opened or closed with a simple lever motion, making it easy to isolate a line for maintenance or in an emergency. Both connections are 1-1\/2 inch National Pipe Tapered (NPT) threaded ports, allowing the valve to thread directly into compatible NPT fittings, thru-hulls, strainers, or pipe runs of the same size. The valve body has a chrome plated exterior finish for corrosion resistance and a clean appearance in exposed below-deck or bilge installations. It measures 7.99 x 5.98 x 2.99 inches overall and weighs 3.48125 pounds, reflecting the solid, thick-walled bronze construction expected of a valve used in raw water and thru-hull service. This is a single valve unit intended to be plumbed inline between two sections of 1-1\/2 inch NPT threaded piping or hose barbs, giving boat owners a dedicated shutoff point for a specific plumbing run.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e GROCO\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number:\u003c\/strong\u003e IBV-1500\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eValve Type:\u003c\/strong\u003e Ball Valve\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Bronze\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExterior Finish:\u003c\/strong\u003e Chrome Plated\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInlet Connection Size:\u003c\/strong\u003e 1-1\/2 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInlet Connection Type:\u003c\/strong\u003e National Pipe Tapered (NPT)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOutlet Connection Size:\u003c\/strong\u003e 1-1\/2 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOutlet Connection Type:\u003c\/strong\u003e NPT\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Size:\u003c\/strong\u003e 1-1\/2 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Type:\u003c\/strong\u003e National Pipe Tapered (NPT)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Ports:\u003c\/strong\u003e 2\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConnector Type:\u003c\/strong\u003e Threaded\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDimensions:\u003c\/strong\u003e 7.99 x 5.98 x 2.99 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 3.48125 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 742985141872\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat size pipe threads does the GROCO IBV-1500 use?\u003c\/strong\u003e The GROCO IBV-1500 has 1-1\/2 inch National Pipe Tapered (NPT) threads on both its inlet and outlet ports, so it threads directly into 1-1\/2 inch NPT fittings or hose barbs.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the IBV-1500 valve made of bronze or plastic?\u003c\/strong\u003e The IBV-1500 is a bronze in-line ball valve with a chrome plated exterior finish, not a plastic valve body.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow many ports does this valve have?\u003c\/strong\u003e This GROCO valve has 2 ports, an inlet and an outlet, making it a straightforward in-line shutoff valve rather than a multi-way valve.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat are the dimensions of the GROCO IBV-1500?\u003c\/strong\u003e The GROCO IBV-1500 measures 7.99 x 5.98 x 2.99 inches overall.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the IBV-1500 ball valve weigh?\u003c\/strong\u003e The GROCO IBV-1500 weighs 3.48125 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat type of valve mechanism does the IBV-1500 use?\u003c\/strong\u003e It is a ball valve, meaning a quarter-turn of the handle rotates an internal ball to fully open or fully close the flow path.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan the IBV-1500 be installed in a straight pipe run?\u003c\/strong\u003e Yes, the GROCO IBV-1500 is designed as an in-line valve, meaning it installs directly within a straight section of 1-1\/2 inch NPT threaded piping or hose.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat finish is on the outside of this valve?\u003c\/strong\u003e The GROCO IBV-1500 has a chrome plated exterior finish over its bronze body.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eAre both connections on the IBV-1500 the same size?\u003c\/strong\u003e Yes, both the inlet and outlet connections on the IBV-1500 are 1-1\/2 inch NPT, so it does not reduce or change pipe size across the valve.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat connector type does the GROCO IBV-1500 use?\u003c\/strong\u003e The IBV-1500 uses threaded NPT connections rather than barbed or compression fittings.\u003c\/p\u003e","brand":"Groco","offers":[{"title":"Default Title","offer_id":49031097221339,"sku":"GRO-IBV-1500","price":94.12,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/51kXQovdg0L_d6d8ddef-28a8-4dec-b80f-94547cca23b5.jpg?v=1785208677"},{"product_id":"groco-bronze-check-valve-pnc-1000-1-inch-npt-pipe-nipple-freshwater-system","title":"Groco Bronze Check Valve PNC-1000, 1 Inch NPT Pipe Nipple, Freshwater System","description":"\u003cp\u003eThe Groco PNC-1000 is a 1 inch bronze check valve built as a pipe nipple fitting for marine freshwater systems, allowing flow in one direction only to prevent backflow in plumbing runs such as freshwater washdown lines, bilge discharge, or other onboard water systems. The valve uses a National Pipe Tapered (NPT) male inlet connection paired with a female NPT (FNPT) outlet, letting it thread directly into standard pipe runs and fittings without additional adapters. Its compact 3 x 1 x 1 inch footprint makes it easy to fit into tight in-line plumbing spaces common on boats, and at 0.4 pounds it adds minimal weight to a system. The valve body combines a bronze exterior finish with a plastic construction, giving it corrosion resistance suited to marine and freshwater environments. As a single-unit, one-way check valve, the PNC-1000 is intended for straightforward in-line installation on new plumbing runs or as a direct replacement for a worn or failed check valve of the same size and connection type.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Groco\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number:\u003c\/strong\u003e PNC-1000\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Plastic\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExterior Finish:\u003c\/strong\u003e Bronze\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInlet Connection Type:\u003c\/strong\u003e National Pipe Tapered (NPT)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOutlet Connection Type:\u003c\/strong\u003e FNPT\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDimensions:\u003c\/strong\u003e 3 x 1 x 1 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.4 pounds\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat size is the Groco PNC-1000 check valve?\u003c\/strong\u003e The PNC-1000 is a 1 inch check valve measuring 3 x 1 x 1 inches overall.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat type of connections does the PNC-1000 use?\u003c\/strong\u003e It has a National Pipe Tapered (NPT) male inlet connection and an FNPT (female NPT) outlet connection, so it threads directly into standard 1 inch NPT pipe and fittings.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the Groco PNC-1000 weigh?\u003c\/strong\u003e The Groco PNC-1000 check valve weighs 0.4 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the PNC-1000 made of?\u003c\/strong\u003e The Groco PNC-1000 check valve has a bronze exterior finish over a plastic body construction.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is this check valve used for?\u003c\/strong\u003e The Groco PNC-1000 is a one-way check valve designed for in-line installation on marine freshwater plumbing systems, preventing backflow through the line.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the PNC-1000 allow flow in both directions?\u003c\/strong\u003e No, the Groco PNC-1000 is a check valve, meaning it only allows flow in one direction and blocks reverse flow.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Groco PNC-1000 suitable for saltwater use?\u003c\/strong\u003e The Groco PNC-1000 is designated for freshwater systems based on its intended application.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan the PNC-1000 be installed without additional adapters?\u003c\/strong\u003e Yes, the NPT male inlet and FNPT outlet on the Groco PNC-1000 allow it to thread directly into standard 1 inch pipe and fittings without extra adapters.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Groco PNC-1000 sold as a single unit?\u003c\/strong\u003e Yes, the PNC-1000 check valve is sold as one unit.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Groco PNC-1000 a genuine Groco part?\u003c\/strong\u003e Yes, the PNC-1000 is a genuine Groco manufactured check valve, not an aftermarket equivalent.\u003c\/p\u003e","brand":"Groco","offers":[{"title":"Default Title","offer_id":49031097516251,"sku":"GRO-PNC-1000","price":22.64,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/61RgAvsnRtL.jpg?v=1785208681"},{"product_id":"groco-bronze-check-valve-pnc-750-3-4-inch-npt-freshwater-system-valve","title":"Groco Bronze Check Valve PNC-750, 3\/4 Inch NPT Freshwater System Valve","description":"\u003cp\u003eThe Groco PNC-750 is a bronze check valve built for freshwater system plumbing aboard boats, allowing flow in one direction only to prevent backflow through a line. It is machined from solid bronze for corrosion resistance in a marine environment, making it suitable for use with onboard freshwater plumbing where a reliable one-way valve is needed to protect pumps, tanks, and fixtures from reverse flow. The valve has a bronze exterior finish and a compact, two-port body designed to thread directly into standard pipe fittings.\u003c\/p\u003e\u003cp\u003eThe PNC-750 has a National Pipe Tapered (NPT) inlet connection sized at 1 inch and a female NPT (FNPT) outlet connection, giving it two ports total for straightforward inline installation. It measures 2 inches by 1 inch by 1 inch and weighs 0.19 pounds, making it a compact addition to a freshwater plumbing run without adding significant weight or bulk. As a check valve, it is a simple, no-power mechanical component that requires no maintenance beyond periodic inspection for debris or wear.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Groco\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number:\u003c\/strong\u003e PNC-750\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Check Valve\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Bronze\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExterior Finish:\u003c\/strong\u003e Bronze\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInlet Connection Size:\u003c\/strong\u003e 1 inch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInlet Connection Type:\u003c\/strong\u003e National Pipe Tapered (NPT)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOutlet Connection Type:\u003c\/strong\u003e FNPT\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Ports:\u003c\/strong\u003e 2\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eItem Dimensions:\u003c\/strong\u003e 2 inches x 1 inch x 1 inch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.19 pounds\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat does the Groco PNC-750 check valve do?\u003c\/strong\u003e The PNC-750 is a bronze check valve that allows water to flow in only one direction through a freshwater plumbing line, preventing backflow into a tank, pump, or fixture.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat size connections does the PNC-750 have?\u003c\/strong\u003e It has a 1 inch National Pipe Tapered (NPT) inlet connection and a female NPT (FNPT) outlet connection, with 2 ports total.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat material is the Groco PNC-750 made of?\u003c\/strong\u003e Bronze, with a bronze exterior finish, giving it corrosion resistance for use in marine freshwater plumbing systems.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow big is the PNC-750 check valve?\u003c\/strong\u003e The valve measures 2 inches by 1 inch by 1 inch and weighs 0.19 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs this valve suitable for a boat's freshwater system?\u003c\/strong\u003e Yes, the Groco PNC-750 bronze check valve is designed for use in marine freshwater system plumbing to prevent reverse flow.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the PNC-750 require any maintenance?\u003c\/strong\u003e As a mechanical check valve with no seals to service on a schedule, the PNC-750 generally only needs periodic inspection to confirm it is free of debris and seating properly.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow many ports does the PNC-750 have?\u003c\/strong\u003e The Groco PNC-750 has 2 ports: one NPT inlet and one FNPT outlet.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the PNC-750 come as a single valve?\u003c\/strong\u003e Yes, the PNC-750 is sold as a single check valve unit.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the PNC-750 a genuine Groco part?\u003c\/strong\u003e Yes, PNC-750 is the Groco manufacturer part number for this bronze check valve.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan the PNC-750 be installed in either flow direction?\u003c\/strong\u003e No, a check valve like the PNC-750 is designed to permit flow in one direction only, from the NPT inlet through to the FNPT outlet, to block backflow.\u003c\/p\u003e","brand":"Groco","offers":[{"title":"Default Title","offer_id":49031097549019,"sku":"GRO-PNC-750","price":14.41,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/619vjzbTlRL.jpg?v=1785208682"},{"product_id":"t-h-marine-sa-2b-flush-mount-scupper-valve-assembly-with-curl-proof-flapper-for-1-to-1-25-inch-drain-tubes","title":"T-H Marine SA-2B Flush Mount Scupper Valve Assembly with Curl-Proof Flapper for 1 to 1.25 Inch Drain Tubes","description":"\u003cp\u003eThe T-H Marine SA-2B is a flush mount scupper valve assembly built to keep water moving out of the boat and not back in. It uses a durable thermo-plastic flapper engineered to resist curling and warping from sun exposure and chemical contact, so the flapper keeps its shape and maintains a secure seal trip after trip. The flapper is finished in black and sits inside a white frame for a clean, finished look on deck.\u003c\/p\u003e\u003cp\u003eInstallation is straightforward: the assembly mounts over an existing drain tube or connects directly to a 1.5 inch thru hull using just four screws. It is compatible with drain tubes ranging from 1 inch up to 1.25 inches, which covers a wide range of boat setups, and its grooved interior is designed to fit securely over drain flanges for a watertight seal. The hole pattern is also designed to support retrofitting other manufacturers' rubber flapper assemblies, making the SA-2B a practical replacement option when an existing scupper flapper has failed.\u003c\/p\u003e\u003cp\u003eWith one port and a flush mount design on both the inlet and outlet, the SA-2B is intended as a simple, reliable drain valve upgrade for boats needing dependable self-bailing performance without unwanted water intrusion.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e T-H Marine\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number:\u003c\/strong\u003e SA-2B\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eItem Type:\u003c\/strong\u003e Scupper Valve\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Plastic (Thermo-plastic)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColor:\u003c\/strong\u003e White Frame \/ Black Flapper\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eItem Dimensions (L x W x H):\u003c\/strong\u003e 2.9 x 2.9 x 0.7 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInlet Connection Size:\u003c\/strong\u003e 1.5 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInlet Connection Type:\u003c\/strong\u003e Flush Mount Adapter\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOutlet Connection Size:\u003c\/strong\u003e 1.25 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOutlet Connection Type:\u003c\/strong\u003e Flush Mount Adapter\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Size:\u003c\/strong\u003e 1.5 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Type:\u003c\/strong\u003e NPT\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Ports:\u003c\/strong\u003e 1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrain Tube Compatibility:\u003c\/strong\u003e 1 inch to 1.25 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIncluded Components:\u003c\/strong\u003e Flapper\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.07 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 733572039207\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1 year manufacturer\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat size drain tubes does the SA-2B fit?\u003c\/strong\u003e The T-H Marine SA-2B accommodates drain tubes ranging from 1 inch up to 1.25 inches, and it can also be connected directly to a 1.5 inch thru hull.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow is the SA-2B scupper valve installed?\u003c\/strong\u003e It mounts over an existing drain tube or onto a 1.5 inch thru hull using four screws, making it a straightforward installation without special tools.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill this scupper valve work as a replacement for an existing flapper assembly?\u003c\/strong\u003e Yes, the SA-2B's hole pattern is designed to support retrofitting other manufacturers' rubber flapper assemblies, so it can serve as a replacement when an existing scupper flapper wears out.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the flapper made of?\u003c\/strong\u003e The SA-2B uses a durable thermo-plastic flapper engineered to resist curling and warping from sun and chemical exposure, helping it maintain a secure seal over time.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat are the overall dimensions of the SA-2B?\u003c\/strong\u003e The T-H Marine SA-2B measures 2.9 x 2.9 x 0.7 inches.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the SA-2B weigh?\u003c\/strong\u003e The SA-2B scupper valve assembly weighs 0.07 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat color is the SA-2B scupper valve?\u003c\/strong\u003e It has a white frame paired with a black flapper.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the SA-2B come with the flapper included?\u003c\/strong\u003e Yes, the flapper is included as part of the SA-2B scupper valve assembly.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow many ports does this scupper valve have?\u003c\/strong\u003e The SA-2B is a single-port scupper valve.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat thread type does the SA-2B use?\u003c\/strong\u003e The SA-2B uses a 1.5 inch NPT thread.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the SA-2B watertight once installed?\u003c\/strong\u003e Yes, its grooved interior is designed to fit securely over drain flanges, providing a watertight seal once installed.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat warranty comes with the T-H Marine SA-2B?\u003c\/strong\u003e The SA-2B is backed by a 1 year manufacturer warranty.\u003c\/p\u003e","brand":"T-H Marine","offers":[{"title":"Default Title","offer_id":49033323806939,"sku":"T-H-SA-2B-DP","price":11.03,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/61Ond6WBbBL.jpg?v=1785244693"},{"product_id":"groco-bb-2-seacock-backing-block-1250-1500-rigid-plastic-bulkhead-mount","title":"Groco BB-2 Seacock Backing Block, 1250-1500, Rigid Plastic Bulkhead Mount","description":"\u003cp\u003eThe Groco BB-2 is a rigid plastic backing block designed to reinforce the hull mounting surface behind a seacock or thru-hull fitting, spreading clamping load evenly and preventing the fitting from crushing or working loose against fiberglass or wood hull material over time. It is built for bulkhead mount installation, sitting between the hull interior surface and the seacock or valve body so that the mounting hardware bears against a flat, solid surface rather than an uneven or flexible hull laminate. The block is molded from durable plastic for corrosion resistance in the below-waterline marine environment where metal backing plates would be prone to galvanic and saltwater corrosion.\u003c\/p\u003e\u003cp\u003eThis backing block is identified as the 1250-1500 size and is intended for use with Groco thru-hull fittings and strainers in that size range. It measures 9 inches by 7 inches, giving it enough surface area to distribute load across the surrounding hull structure at a typical seacock installation point.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Groco\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number:\u003c\/strong\u003e BB-2\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Name:\u003c\/strong\u003e Seacock Backing Block 1250-1500\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCategory:\u003c\/strong\u003e Thru Hull Fittings and Strainers\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Plastic\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecial Feature:\u003c\/strong\u003e Rigid\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMounting Type:\u003c\/strong\u003e Bulkhead Mount\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDimensions:\u003c\/strong\u003e 9 inches L x 7 inches W\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.26 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 742985170148\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat is the Groco BB-2 backing block used for?\u003c\/strong\u003e The Groco BB-2 is a rigid plastic backing block that mounts behind a seacock or thru-hull fitting to reinforce the hull surface at the mounting point and help spread clamping load evenly.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the BB-2 backing block bulkhead mounted?\u003c\/strong\u003e Yes, the BB-2 uses a bulkhead mount configuration, sitting flush against the hull interior surface behind the thru-hull fitting.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat material is the Groco BB-2 made of?\u003c\/strong\u003e It is made of rigid plastic, chosen for corrosion resistance in the below-waterline marine environment.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat are the dimensions of the BB-2 backing block?\u003c\/strong\u003e The Groco BB-2 measures 9 inches long by 7 inches wide.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the Groco BB-2 weigh?\u003c\/strong\u003e The BB-2 backing block weighs 0.26 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat size thru-hull fitting is the BB-2 designed for?\u003c\/strong\u003e The BB-2 is designated as the 1250-1500 size backing block for use with Groco thru-hull fittings and strainers in that size range.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the BB-2 backing block include mounting hardware?\u003c\/strong\u003e The listing for the Groco BB-2 covers the backing block itself; no separate hardware components are specified.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy does a seacock need a backing block?\u003c\/strong\u003e A backing block like the BB-2 reinforces the hull behind a seacock so the fitting's mounting fasteners bear against a solid, flat surface instead of an uneven or flexible hull laminate, reducing the risk of the fitting working loose or cracking the hull over time.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Groco BB-2 genuine Groco or aftermarket?\u003c\/strong\u003e The BB-2 is a genuine Groco part, identified by the manufacturer part number BB-2.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat category of marine hardware does the BB-2 fall under?\u003c\/strong\u003e The Groco BB-2 is categorized under thru-hull fittings and strainers as a backing block accessory.\u003c\/p\u003e","brand":"Groco","offers":[{"title":"Default Title","offer_id":49033324298459,"sku":"GRO-BB-2","price":58.82,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/41vPLMIOwlL.jpg?v=1785244763"},{"product_id":"groco-bb-1-bronze-backing-block-for-3-4-and-1-inch-seacocks","title":"Groco BB-1 Bronze Backing Block for 3\/4 and 1 Inch Seacocks","description":"\u003cp\u003eThe Groco BB-1 is a bronze backing block designed to reinforce and support 3\/4 inch and 1 inch seacocks at the hull or bulkhead. Installed behind the seacock body, the backing block spreads mounting loads across a wider area of the mounting surface, reducing stress concentration on the hull laminate or bulkhead material and helping the seacock installation resist vibration, impact, and the ongoing strain of thru-hull plumbing. Bronze construction gives the block strong corrosion resistance in salt and fresh water environments, matching the service life expected of the bronze seacocks and fittings it supports.\u003c\/p\u003e\u003cp\u003eThe BB-1 is intended for bulkhead mount applications and is sized to fit both 3\/4 inch and 1 inch seacock installations, making it a practical stocking item for boat builders, riggers, and owners performing seacock replacement or new below-the-waterline plumbing installs. Its flat block profile allows it to sit directly against the mounting surface, distributing clamping and bolt-through loads evenly beneath the seacock flange.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Groco\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number:\u003c\/strong\u003e BB-1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Bronze\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Dimensions:\u003c\/strong\u003e 9 inches L x 7 inches W\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMounting Type:\u003c\/strong\u003e Bulkhead Mount\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFitment:\u003c\/strong\u003e 3\/4 inch and 1 inch seacocks\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.18125 pounds\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat is the Groco BB-1 backing block used for?\u003c\/strong\u003e The Groco BB-1 is a bronze backing block that reinforces the mounting point of a seacock, spreading load across the hull or bulkhead surface behind the seacock body.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat seacock sizes does the BB-1 fit?\u003c\/strong\u003e The BB-1 is sized for 3\/4 inch and 1 inch seacocks.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat material is the BB-1 backing block made from?\u003c\/strong\u003e Bronze, which provides strong corrosion resistance for below-the-waterline marine use.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat are the dimensions of the BB-1 backing block?\u003c\/strong\u003e The BB-1 measures 9 inches long by 7 inches wide.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the Groco BB-1 weigh?\u003c\/strong\u003e The BB-1 backing block weighs 0.18125 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow is the BB-1 backing block mounted?\u003c\/strong\u003e It is a bulkhead mount block, installed flat against the mounting surface behind the seacock.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the BB-1 sold as a single piece?\u003c\/strong\u003e Yes, the Groco BB-1 is supplied as one bronze backing block.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill the BB-1 work with any brand of seacock?\u003c\/strong\u003e The BB-1 is sized for 3\/4 inch and 1 inch seacock installations generally; check that your seacock's mounting footprint matches the block's 9 inch by 7 inch dimensions before ordering.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy use a backing block with a seacock instead of mounting directly to the hull?\u003c\/strong\u003e A backing block like the BB-1 distributes clamping and bolt loads over a larger area, reducing stress on the hull or bulkhead compared to mounting a seacock directly against an unreinforced surface.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the BB-1 suitable for both saltwater and freshwater boats?\u003c\/strong\u003e Yes, its bronze construction resists corrosion in both saltwater and freshwater environments.\u003c\/p\u003e","brand":"Groco","offers":[{"title":"Default Title","offer_id":49033324331227,"sku":"GRO-BB-1","price":46.41,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/41pApzNQxbL.jpg?v=1785244763"},{"product_id":"t-h-marine-ils-inline-scupper-check-valve-double-barb-available-in-3-4-to-1-1-2-hose","title":"T-H Marine ILS Inline Scupper Check Valve, Double Barb - Available in 3\/4\" to 1-1\/2\" Hose","description":"\u003cp\u003eThe T-H Marine ILS Series Inline Scupper Check Valve is a double-barb, in-line fitting that installs between two runs of marine hose in a boat's scupper or livewell drain line. Inside, a thermo-plastic flapper opens under outflow pressure to let bilge or deck water drain overboard, then seats closed to block water, following waves, or backwash from pushing back up into the boat. The chemical resistant plastic body and black finish are built to handle continuous exposure to bilge water, saltwater spray, and fuel\/oil residue without swelling or cracking. Because it is a barbed inline valve rather than a thru-hull fitting, it drops into an existing hose run using standard hose clamps on both ends, making it a straightforward upgrade or replacement for boats that are taking on water through their scuppers at rest or under way.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eBrand: T-H Marine\u003c\/li\u003e\n\u003cli\u003eConnection Type: Double Barb (inline)\u003c\/li\u003e\n\u003cli\u003eNumber of Ports: 2\u003c\/li\u003e\n\u003cli\u003eValve Type: Lift Check Valve\u003c\/li\u003e\n\u003cli\u003eFlapper Material: Thermo-plastic\u003c\/li\u003e\n\u003cli\u003eBody Material: Chemical resistant plastic\u003c\/li\u003e\n\u003cli\u003eColor: Black\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSizes \u0026amp; Options\u003c\/h3\u003e\u003cp\u003eThis valve is sold by hose size, so measure the inside diameter (ID) of the scupper or drain hose you are installing it into before ordering. It is available in a 3\/4 Inch hose version (ILS-750) for smaller livewell and deck drains, and a 1-1\/2 Inch hose version (ILS-1500) for larger bilge and self-bailing scupper lines. Both versions share the same double-barb inline design, thermo-plastic flapper, and black chemical resistant body, and use standard hose clamps on each barbed end for a secure, leak-free connection.\u003c\/p\u003e","brand":"T-H Marine","offers":[{"title":"1-1\/2\" Hose","offer_id":49046150250715,"sku":"T-H-ILS-1500","price":22.88,"currency_code":"USD","in_stock":true},{"title":"3\/4\" Hose","offer_id":49046150283483,"sku":"T-H-ILS-750","price":22.88,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/inline-scupper-check-valves-28008765030443_d16459d6-1a97-4540-afb6-5dc107d41470.jpg?v=1785395253"},{"product_id":"groco-bronze-tri-flanged-ball-valve-seacock-available-in-1-to-1-1-2","title":"Groco Bronze Tri-Flanged Ball Valve Seacock - Available in 1\" to 1-1\/2\"","description":"\u003cp\u003eThe Groco Bronze Tri-Flanged Ball Valve Seacock is a solid bronze, full-flow shutoff valve designed to mount directly to a below-the-waterline thru-hull fitting. Its tri-flanged, three-port body bolts securely to the hull-mounted thru-hull and accepts a hose barb or fitting on the outlet side, giving you a reliable, corrosion-resistant way to isolate seawater intake or discharge lines for engine cooling, head systems, washdowns, livewells, and other below-waterline plumbing. Bronze construction resists the corrosive effects of continuous saltwater and freshwater immersion far better than standard brass or plastic valves, making this seacock a trusted choice for offshore and coastal boats alike.\u003c\/p\u003e\u003cp\u003eEach valve uses NPT threaded connections and a chrome\/stainless exterior finish for a clean, durable installed appearance. The full-flow ball design means minimal restriction to water flow when open, and a positive quarter-turn shutoff when closed. This line is available in three pipe sizes to match the thru-hull fitting already installed on your vessel or specified in your plumbing plan.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eBrand: Groco\u003c\/li\u003e\n\u003cli\u003eMaterial: Bronze\u003c\/li\u003e\n\u003cli\u003eValve Type: Ball Valve (tri-flanged, 3-port)\u003c\/li\u003e\n\u003cli\u003eConnection Type: National Pipe Tapered (NPT) inlet, flanged outlet\u003c\/li\u003e\n\u003cli\u003eExterior Finish: Chrome, Stainless Steel\u003c\/li\u003e\n\u003cli\u003eSizes: 1 Inch, 1-1\/4 Inch, 1-1\/2 Inch\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSizes \u0026amp; Options\u003c\/h3\u003e\u003cp\u003eThis seacock is sold by pipe size: 1 Inch (FBV-1000), 1-1\/4 Inch (FBV-1250), and 1-1\/2 Inch (FBV-1500). Match your selection to the outside diameter of the thru-hull fitting already installed, or to the size specified in your boat's plumbing schematic. Installing an undersized valve will restrict flow and create unnecessary pressure drop, while an oversized valve will not thread onto the thru-hull. If you are unsure of your existing thru-hull size, measure the threaded fitting directly or consult your boat's builder documentation before ordering.\u003c\/p\u003e","brand":"Groco","offers":[{"title":"1\"","offer_id":49047371186395,"sku":"GRO-FBV-1000","price":79.09,"currency_code":"USD","in_stock":true},{"title":"1-1\/2\"","offer_id":49047371219163,"sku":"GRO-FBV-1500","price":133.99,"currency_code":"USD","in_stock":true},{"title":"1-1\/4\"","offer_id":49047371251931,"sku":"GRO-FBV-1250","price":99.35,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/51e8mIaC-dL_b838e22c-c36a-43e7-924c-75c06f0beb9d.jpg?v=1785420959"},{"product_id":"groco-bronze-in-line-npt-ball-valve-ibv-series-available-in-3-4-to-1-1-4-npt","title":"Groco Bronze In-Line NPT Ball Valve, IBV Series - Available in 3\/4\" to 1-1\/4\" NPT","description":"\u003cp\u003eThe Groco IBV Series bronze in-line ball valve is a full-flow, two-port shutoff valve built for marine plumbing runs where corrosion resistance and reliable sealing matter most - raw water intake lines, thru-hull shutoffs, washdown circuits, engine cooling supply, and other onboard plumbing that sees constant exposure to saltwater and vibration. Each valve is cast from bronze with a durable exterior finish and uses brass and stainless steel internals for long service life, and every size in the line carries UL recognition for marine and industrial use. The straight-through, full-port design keeps flow restriction to a minimum compared to standard ball valves, and the quarter-turn handle gives a clear, positive on\/off indication at a glance - important when a valve needs to be closed quickly in an emergency.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eBrand: Groco\u003c\/li\u003e\n\u003cli\u003eValve Type: Bronze In-Line Ball Valve\u003c\/li\u003e\n\u003cli\u003eConnection Type: NPT (National Pipe Tapered), FNPT outlet\u003c\/li\u003e\n\u003cli\u003eNumber of Ports: 2 (straight-through shutoff)\u003c\/li\u003e\n\u003cli\u003eBody Material: Brass and stainless steel internals, bronze exterior finish\u003c\/li\u003e\n\u003cli\u003eCertification: UL Recognized\u003c\/li\u003e\n\u003cli\u003eSizes Available: 3\/4 Inch NPT, 1 Inch NPT, 1-1\/4 Inch NPT\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSizes \u0026amp; Options\u003c\/h3\u003e\u003cp\u003eThis valve is sold by pipe size, and the correct choice comes down to matching your existing plumbing run rather than the application itself - a raw water intake and a washdown line can both use the same size valve if the pipe is the same. Measure the NPT thread size of the pipe or fitting the valve will be installed into (or match the size of the valve it is replacing) and select the corresponding option: 3\/4 Inch NPT (IBV-750) for smaller supply lines and washdown circuits, 1 Inch NPT (IBV-1000) for common raw water intake and cooling lines, or 1-1\/4 Inch NPT (IBV-1250) for higher-flow intake and discharge runs. All three sizes share the same bronze construction, full-port flow path, and UL recognition - only the thread size and overall dimensions change.\u003c\/p\u003e","brand":"Groco","offers":[{"title":"1\" NPT","offer_id":49047924900059,"sku":"GRO-IBV-1000","price":48.37,"currency_code":"USD","in_stock":false},{"title":"1-1\/4\" NPT","offer_id":49047924932827,"sku":"GRO-IBV-1250","price":70.59,"currency_code":"USD","in_stock":true},{"title":"3\/4\" NPT","offer_id":49047924965595,"sku":"GRO-IBV-750","price":28.13,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/51kXQovdg0L_fa584fe7-b590-4978-a5ac-41266bb95f00.jpg?v=1785432379"},{"product_id":"t-h-marine-reducing-tee-fittings-3-way-hose-barb-tees-available-in-3-4-to-1-1-2-configurations","title":"T-H Marine Reducing Tee Fittings - 3-Way Hose Barb Tees, Available in 3\/4\" to 1-1\/2\" Configurations","description":"\u003cp\u003eT-H Marine Reducing Tee Fittings are 3-way hose barb tees built to combine flow from a smaller hose into a larger drain or supply line, so multiple hose sources can share a single exit fitting instead of each requiring its own through-hull opening. Each tee has two main legs at one barb size and a third, reduced leg at a smaller barb size, letting you merge a smaller feed hose into a larger main line (or split off a smaller branch) without cutting in an extra fitting or drilling an additional hole. Molded for a secure barb grip and consistent wall thickness, these fittings hold up to marine bilge, livewell, washdown, and drain plumbing applications where a compact, reliable junction is needed.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eBrand: T-H Marine\u003c\/li\u003e\n\u003cli\u003eStyle: 3-way reducing tee, hose barb connections\u003c\/li\u003e\n\u003cli\u003eConfigurations: 1-1\/8\" x 3\/4\" x 1-1\/8\", 1-1\/2\" x 3\/4\" x 1-1\/2\", and 1-1\/2\" x 1-1\/8\" x 1-1\/2\"\u003c\/li\u003e\n\u003cli\u003eConstruction: Molded barb fitting for secure hose clamp retention\u003c\/li\u003e\n\u003cli\u003eUse: Bilge, livewell, washdown, and drain hose plumbing\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSizes \u0026amp; Options\u003c\/h3\u003e\u003cp\u003eEach size in this line is a distinct hose barb configuration, not just a scaled-up version of the others, so match the fitting to the actual I.D. of the hoses you are joining. Measure the inside diameter of your two main-line hoses and your branch\/reduced hose before ordering, since a barb that is too small will not seal under clamp pressure and one that is too large will not seat on the hose at all. If you are combining a smaller hose into a larger drain run, choose the tee whose two main legs match your larger hose and whose reduced leg matches your smaller hose.\u003c\/p\u003e","brand":"T-H Marine","offers":[{"title":"1-1\/8\" x 3\/4\" x 1-1\/8\"","offer_id":49047964385499,"sku":"T-H-TEE-250DP","price":10.09,"currency_code":"USD","in_stock":false},{"title":"1-1\/2\" x 3\/4\" x 1-1\/2\"","offer_id":49047964418267,"sku":"T-H-TEE-150DP","price":9.05,"currency_code":"USD","in_stock":false},{"title":"1-1\/2\" x 1-1\/8\" x 1-1\/2\"","offer_id":49047964451035,"sku":"T-H-TEE-350DP","price":10.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/1-1-2-x-3-4-x-1-1-2-reducing-tee-fittings-4640880328747_7ffae575-a56a-4a90-b1e7-376139cd489f.jpg?v=1785432726"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/collections\/inline-scupper-check-valves-28008765030443_2ff616aa-302b-4e2b-9973-6c08b5855781.jpg?v=1785356962","url":"https:\/\/www.goodvibesmarina.com\/collections\/gvcat-pumps-plumbing-sanitation-thru-hulls-valves-strainers-seacocks-ball-valves.oembed","provider":"Good Vibes Marina","version":"1.0","type":"link"}