{"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","url":"https:\/\/www.goodvibesmarina.com\/products\/shurflo-in-line-check-valve-340-001-1-2-inch-barb-100-psi-back-surge-protection","provider":"Good Vibes Marina","version":"1.0","type":"link"}