{"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","url":"https:\/\/www.goodvibesmarina.com\/products\/moeller-033807-10-anti-siphon-valve-3-8-in-hose-barb-x-1-4-in-npt-brass-30-calibration","provider":"Good Vibes Marina","version":"1.0","type":"link"}