{"product_id":"conrader-cpr-non-code-proportional-pressure-relief-valve","title":"Conrader CPR-Series Non-Code Proportional Pressure Relief Valve — Brass, Field-Adjustable","description":"\u003cp\u003eThe \u003cstrong\u003eConrader CPR-Series\u003c\/strong\u003e is a non-code, soft-seat \u003cstrong\u003eproportional pressure relief valve\u003c\/strong\u003e for compressed-air and pneumatic systems. Unlike \"pop\"-type safety valves, it opens gradually as pressure rises, bleeding off excess to hold your system at a desired pressure level. The set point is \u003cstrong\u003efield-adjustable\u003c\/strong\u003e with a knurled screw locked by a jam nut — so you can dial in the exact relief pressure your application needs.\u003c\/p\u003e\n\u003ch3\u003eKey specifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Soft-seat proportional relief valve (non-code) — not a pop-off safety valve\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBody:\u003c\/strong\u003e C360 machined brass\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInternals:\u003c\/strong\u003e Stainless steel spring, nylon piston, nitrile seal (the 1\/4\" model uses a stainless steel piston and seal)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAdjustment:\u003c\/strong\u003e Field-adjustable knurled screw, locked with a jam nut (not preset)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTemperature range:\u003c\/strong\u003e -65°F to 250°F\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeat tightness:\u003c\/strong\u003e Bubble-tight within 5 psig at set pressures of 50 psig or less, and within 10% above 50 psig. Conforms to API 527.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePort sizes:\u003c\/strong\u003e 1\/4\", 3\/8\", 1\/2\", 3\/4\", and 1\" MNPT\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread sealant:\u003c\/strong\u003e Everseal 483 applied standard\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003ePlease note:\u003c\/strong\u003e CPR valves are built to a specific set-pressure range. Specify your desired set pressure (PSI) when ordering.\u003c\/p\u003e\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cp\u003eUse in compressed-air systems, receiver tanks, pump bypass and pilot lines, and pneumatic equipment where the goal is to maintain or limit pressure to a target level rather than dump the entire system. Common on air compressors, control lines, and OEM machinery.\u003c\/p\u003e\n\u003cp\u003eMade in the U.S.A. by Conrader, the CPR-Series delivers repeatable, adjustable overpressure protection in a compact all-brass package — an ideal proportional relief valve for air compressor and industrial pneumatic applications.\u003c\/p\u003e","brand":"Conrader","offers":[{"title":"1\/4\" MNPT","offer_id":54270649368851,"sku":"CPR25PSI","price":9.83,"currency_code":"USD","in_stock":true},{"title":"3\/8\" MNPT","offer_id":54270649401619,"sku":"CPR38PSI","price":12.83,"currency_code":"USD","in_stock":true},{"title":"1\/2\" MNPT","offer_id":54270649434387,"sku":"CPR50PSI","price":18.0,"currency_code":"USD","in_stock":true},{"title":"3\/4\" MNPT","offer_id":54270649467155,"sku":"CPR75PSI","price":19.67,"currency_code":"USD","in_stock":true},{"title":"1\" MNPT","offer_id":54270649499923,"sku":"CPR1PSI","price":81.17,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0825\/3141\/8387\/files\/Conrader_CPR_Valves.jpg?v=1781115538","url":"https:\/\/aircompressorstore.com\/products\/conrader-cpr-non-code-proportional-pressure-relief-valve","provider":"Warthog Air Compressor Store","version":"1.0","type":"link"}