{"product_id":"34-fxf-pvc-inline-chk-vlv-spring-loaded-940332","title":"3\/4 in. Female x Female PVC Inline Spring-Loaded Check Valve","description":"\u003cp\u003eThe \u003cstrong\u003e3\/4 in. Female x Female PVC Inline Spring-Loaded Check Valve\u003c\/strong\u003e (#940332) is a PVC spring-loaded check valve for backflow prevention in chemical dosing, water treatment, and corrosive-fluid piping. Non-metallic PVC construction resists chlorine, most acids, bases, and oxidizers that would attack metal check valves. Female NPT connections allow direct threaded installation.\u003c\/p\u003e\n\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ctable\u003e\n  \u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003eBody Material\u003c\/td\u003e\n\u003ctd\u003ePVC (Schedule 80 construction)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eSeal \/ Ball\u003c\/td\u003e\n\u003ctd\u003eEPDM or Viton (chemical dependent)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eEnd Connections\u003c\/td\u003e\n\u003ctd\u003eFemale NPT threaded\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003ePressure Rating\u003c\/td\u003e\n\u003ctd\u003e150 PSI at 73°F\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eTemperature Range\u003c\/td\u003e\n\u003ctd\u003e−15°F to 140°F (−26°C to 60°C)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003ePart Number\u003c\/td\u003e\n\u003ctd\u003e940332\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003ePVC body — corrosion-resistant for most acids, bases, and chlorinated water\u003c\/li\u003e\n  \u003cli\u003eSpring-loaded poppet — automatic closure on flow reversal\u003c\/li\u003e\n  \u003cli\u003eFemale NPT threaded connections\u003c\/li\u003e\n  \u003cli\u003eLightweight, non-metallic — no galvanic corrosion risk\u003c\/li\u003e\n  \u003cli\u003eEPDM or Viton ball\/seat — check compatibility chart for your media\u003c\/li\u003e\n  \u003cli\u003eTransparent or translucent body options available for visual flow confirmation\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eCommon Applications\u003c\/h2\u003e\n\u003cp\u003eStandard backflow preventer in water treatment chemical dosing lines, RO system reject lines, irrigation chemical injection, swimming pool chemical feeders, and any PVC piping system requiring one-way flow protection. PVC construction ensures compatibility with sodium hypochlorite, muriatic acid, sodium bisulfite, and other common water treatment chemicals.\u003c\/p\u003e\n\n\u003ch2\u003eTechnical Resources\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003ca href=\"\/pages\/check-valve-types-explained\"\u003eCheck Valve Types Explained\u003c\/a\u003e — Spring, swing, ball check comparison\u003c\/li\u003e\n  \u003cli\u003e\n\u003ca href=\"\/pages\/pvc-valve-chemical-compatibility-chart\"\u003ePVC Chemical Compatibility Chart\u003c\/a\u003e — Verify your media\u003c\/li\u003e\n  \u003cli\u003e\n\u003ca href=\"\/collections\/pvc-check-valves\"\u003eShop PVC Check Valves\u003c\/a\u003e — Full PVC check valve range\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- apex-guide-links --\u003e\n\u003cdiv style=\"margin-top:24px;padding:16px 20px;border:1px solid #ddd;border-radius:6px;background:#fafafa;\"\u003e\n\u003ch3 style=\"margin:0 0 10px;font-size:1.05rem;\"\u003eExpert Guides for This Product\u003c\/h3\u003e\n\u003cul style=\"margin:0;padding-left:20px;\"\u003e\n\u003cli\u003e\n\u003ca style=\"color:#FE8C03\" href=\"\/pages\/check-valve-installation-direction-orientation\"\u003eCheck Valve Orientation \u0026amp; Installation\u003c\/a\u003e — flow direction and mounting rules\u003c\/li\u003e\n\u003cli\u003e\n\u003ca style=\"color:#FE8C03\" href=\"\/pages\/check-valve-sizing-guide\"\u003eCheck Valve Sizing Guide\u003c\/a\u003e — why line size isn't valve size\u003c\/li\u003e\n\u003cli\u003e\n\u003ca style=\"color:#FE8C03\" href=\"\/pages\/check-valve-slamming-water-hammer\"\u003eSlamming \u0026amp; Water Hammer\u003c\/a\u003e — causes and fixes\u003c\/li\u003e\n\u003cli\u003e\n\u003ca style=\"color:#FE8C03\" href=\"\/pages\/check-valve-leaking-diagnosis\"\u003eCheck Valve Leaking?\u003c\/a\u003e — diagnose and fix it\u003c\/li\u003e\n\u003cli\u003e\n\u003ca style=\"color:#FE8C03\" href=\"\/pages\/check-valve-chattering-noise\"\u003eCheck Valve Chattering\u003c\/a\u003e — the sizing problem nobody checks\u003c\/li\u003e\n\u003cli\u003e\n\u003ca style=\"color:#FE8C03\" href=\"\/pages\/buna-vs-viton-check-valve-seats\"\u003eBuna vs. Viton Seats\u003c\/a\u003e — which elastomer fits your media\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c!-- \/apex-guide-links --\u003e","brand":"Midland Industries","offers":[{"title":"Default Title","offer_id":48629260353751,"sku":"940332","price":16.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0819\/4152\/8791\/files\/MIDLANDINDUSTRIES_940332_1322900e-6329-40b9-a78c-f7bf573ce835.jpg?v=1778884424","url":"https:\/\/apexflowsolutions.com\/products\/34-fxf-pvc-inline-chk-vlv-spring-loaded-940332","provider":"Apex Flow Solutions","version":"1.0","type":"link"}