{"title":"Spring Check Valves","description":"\u003cp\u003eShop spring check valves for industrial fluid-control systems where automatic one-way flow and dependable backflow prevention are required. This collection includes Midland Industries spring check valves in multiple configurations, sizes, and threaded connection styles for water, oil, gas, and other compatible media.\u003c\/p\u003e\n\n\u003ch2\u003eSpring-Loaded Check Valves for Reliable Backflow Control\u003c\/h2\u003e\n\n\u003cp\u003eSpring check valves use an internal spring to help close the valve when forward flow stops or pressure reverses. This design provides positive automatic shutoff and can be used in piping and equipment where preventing reverse flow is important to system operation and component protection.\u003c\/p\u003e\n\n\u003ch2\u003eY-Spring, 1-Piece and 2-Piece Check Valves\u003c\/h2\u003e\n\n\u003cp\u003eAvailable designs include Y-pattern spring check valves, compact 1-piece valves, and 2-piece barrel-type configurations. Stainless-steel construction is available throughout much of the collection, including 316 stainless-steel models for applications requiring additional corrosion resistance.\u003c\/p\u003e\n\n\u003cp\u003eThreaded configurations include FPT, FNPT, FNPT-to-FNPT, and MNPT-to-FNPT connections, with nominal sizes ranging from 1\/4 inch through 2 inches depending on valve style.\u003c\/p\u003e\n\n\u003ch2\u003eChoosing the Right Spring Check Valve\u003c\/h2\u003e\n\n\u003cp\u003eBefore ordering, verify nominal size, connection type, body material, pressure rating, cracking pressure, operating temperature, seal material, and media compatibility. Cracking pressure is especially important because it determines the minimum upstream pressure required to begin opening the valve.\u003c\/p\u003e\n\n\u003cp\u003eFor additional one-way flow-control options, browse our complete \u003ca href=\"\/collections\/check-valves\"\u003echeck valves\u003c\/a\u003e, \u003ca href=\"\/collections\/in-line-check-valves\"\u003ein-line check valves\u003c\/a\u003e, or \u003ca href=\"\/collections\/swing-check-valves\"\u003eswing check valves\u003c\/a\u003e.\u003c\/p\u003e\n","products":[{"product_id":"949471","title":"949471 1-Piece Spring Check Valve, 1\/4-in Nominal, MNPT x FNPT, 316 Stainless Steel Body","description":"\u003cp\u003e1-Piece Spring Check Valve, 1\/4 in Nominal, Connection Type: MNPT x FNPT, 1500 psi, -10 to 150 deg C, Gas, Oil, Water Media, 2.165 in L Inlet to Outlet, 316 Stainless Steel Body, Rubber Seal, 304 Stainless Steel Spring and Spring Ring\/CF8M Steel Cap\/304\/316 Stainless Steel Spool Trim, Import, Additional Information: 2 to 3 psi Opening Pressure, 2.165 in Length, 0.748 in Dia, 0.699 in Thread Width, 0.394 in Thread Length, 1\/4-18 Thread Size\u003c\/p\u003e","brand":"Midland Industries","offers":[{"title":"Default Title","offer_id":46898215878909,"sku":"949471","price":81.53,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0669\/8785\/2029\/files\/MIDLANDINDUSTRIES_949471.jpg?v=1763703018"},{"product_id":"949451","title":"949451 1-Piece Spring Check Valve, 1\/4-in Nominal, FNPT x FNPT, 316 Stainless Steel Body","description":"\u003cp\u003e1-Piece Spring Check Valve, 1\/4 in Nominal, Connection Type: FNPT x FNPT, 1500 psi, -10 to 150 deg C, Gas, Oil, Water Media, 2.165 in L Inlet to Outlet, 316 Stainless Steel Body, Rubber Seal, 304 Stainless Steel Spring and Spring Ring\/CF8M Steel Cap\/304\/316 Stainless Steel Spool Trim, Import, Additional Information: 2 to 3 psi Opening Pressure, 2.165 in Length, 0.748 in Dia, 0.699 in Thread Width, 0.394 in Thread Length, 1\/4-18 Thread Size\u003c\/p\u003e","brand":"Midland Industries","offers":[{"title":"Default Title","offer_id":46898242879741,"sku":"949451","price":82.64,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0669\/8785\/2029\/files\/MIDLANDINDUSTRIES_949451.jpg?v=1763704040"},{"product_id":"949472","title":"949472 1-Piece Spring Check Valve, 3\/8-in Nominal, MNPT x FNPT, 316 Stainless Steel Body","description":"\u003cp\u003e1-Piece Spring Check Valve, 3\/8 in Nominal, Connection Type: MNPT x FNPT, 1500 psi, -10 to 150 deg C, Gas, Oil, Water Media, 2.165 in L Inlet to Outlet, 316 Stainless Steel Body, Rubber Seal, 304 Stainless Steel Spring and Spring Ring\/CF8M Steel Cap\/304\/316 Stainless Steel Spool Trim, Import, Additional Information: 2 to 3 psi Opening Pressure, 2.165 in Length, 0.866 in Dia, 0.787 in Thread Width, 0.394 in Thread Length, 3\/8-18 Thread Size\u003c\/p\u003e","brand":"Midland Industries","offers":[{"title":"Default Title","offer_id":46898268274941,"sku":"949472","price":89.3,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0669\/8785\/2029\/files\/949472-1-piece-spring-check-valve-38-in-nominal-mnpt-x-fnpt-316-stainless-steel-body-9497872.jpg?v=1770898748"},{"product_id":"949452","title":"949452 1-Piece Spring Check Valve, 3\/8-in Nominal, FNPT x FNPT, 316 Stainless Steel Body","description":"\u003cp\u003e1-Piece Spring Check Valve, 3\/8 in Nominal, Connection Type: FNPT x FNPT, 1500 psi, -10 to 150 deg C, Gas, Oil, Water Media, 2.165 in L Inlet to Outlet, 316 Stainless Steel Body, Rubber Seal, 304 Stainless Steel Spring and Spring Ring\/CF8M Steel Cap\/304\/316 Stainless Steel Spool Trim, Import, Additional Information: 2 to 3 psi Opening Pressure, 2.165 in Length, 0.866 in Dia, 0.787 in Thread Width, 0.394 in Thread Length, 3\/8-18 Thread Size\u003c\/p\u003e","brand":"Midland Industries","offers":[{"title":"Default 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