{"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","url":"https:\/\/www.goodvibesmarina.com\/products\/moeller-marine-033801-10-brass-anti-siphon-valve-3-8-in-barb-x-1-4-npt-30-calibration","provider":"Good Vibes Marina","version":"1.0","type":"link"}