{"product_id":"nibco-kw900w-wafer-check-valve-3-inch-to-12-inch","title":"NIBCO KW-900-W Wafer Check Listing | 3–12 Inch","description":"\u003ch2\u003eOverview\u003c\/h2\u003e\u003cp\u003eThe NIBCO KW-900-W family is a spring-actuated, double-door wafer check for one-way flow control. Two doors in one check valve do not make it a testable double check backflow-prevention assembly.\u003c\/p\u003e\u003ch2\u003eOrdering \u0026amp; Application Checks\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eMatch the full manufacturer ordering code and original nameplate, not a model-family name alone.\u003c\/li\u003e\n\u003cli\u003eConfirm the supplied end connections, orientation and included accessories.\u003c\/li\u003e\n\u003cli\u003eA component rating or approval does not certify the complete assembly or installation.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\u003ctable border=\"1\" cellpadding=\"6\" cellspacing=\"0\" style=\"border-collapse:collapse;width:100%\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eDetail\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eListed Supplier SKU(s)\u003c\/strong\u003e\u003c\/th\u003e\n\u003ctd\u003eKW900W-0300, KW900W-0400, KW900W-LF-0600, KW900W-LF-0800, KW900W-1000, KW900W-1200\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eListed Sizes\u003c\/strong\u003e\u003c\/th\u003e\n\u003ctd\u003e3, 4, 6, 8, 10 and 12 inches\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eListed Code Mix\u003c\/strong\u003e\u003c\/th\u003e\n\u003ctd\u003eKW900W and KW900W-LF aliases; verify lead-free revision separately for each option\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eCurrent LF Family Reference\u003c\/strong\u003e\u003c\/th\u003e\n\u003ctd\u003eKW-900-W-LF: ductile-iron body in 2–12-inch range with molded Buna-N resilient seat; 250 psi WWP family rating\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eApproval \/ Lead Content\u003c\/strong\u003e\u003c\/th\u003e\n\u003ctd\u003eCurrent LF sheet references UL\/ULC, FM and WQA NSF\/ANSI 372. Confirm supplied figure and exact size before applying these to legacy non-LF aliases\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eConnections \/ Temperature\u003c\/strong\u003e\u003c\/th\u003e\n\u003ctd\u003eWafer mounting; confirm companion flanges, installation direction and size-specific temperature limits\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003cp\u003e\u003cstrong\u003eSubmittal \u0026amp; Installation Note:\u003c\/strong\u003e Verify application suitability and local AHJ \/ water-authority requirements against the exact manufacturer submittal. Follow the matching isolation, depressurization, installation and testing procedures. In-line service access does not guarantee uninterrupted protected-line flow. Provide drainage and service clearance where required; no universal NFPA-compliance guarantee is implied.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDocumentation:\u003c\/strong\u003e \u003ca href=\"https:\/\/catalog.nibco.com\/Asset\/KW900WFP.pdf\"\u003eNIBCO current KW-900-W-LF specification; verify legacy alias mapping\u003c\/a\u003e\u003c\/p\u003e","brand":"Nibco Inc.","offers":[{"title":"3 in.","offer_id":46378201317624,"sku":"KW900W-0300","price":1002.99,"currency_code":"USD","in_stock":true},{"title":"4 in.","offer_id":46378201350392,"sku":"KW900W-0400","price":989.99,"currency_code":"USD","in_stock":true},{"title":"6 in.","offer_id":46378201383160,"sku":"KW900W-LF-0600","price":1646.99,"currency_code":"USD","in_stock":true},{"title":"8 in.","offer_id":46378201415928,"sku":"KW900W-LF-0800","price":2654.99,"currency_code":"USD","in_stock":true},{"title":"10 in.","offer_id":46378201448696,"sku":"KW900W-1000","price":4290.99,"currency_code":"USD","in_stock":true},{"title":"12 in.","offer_id":46378201481464,"sku":"KW900W-1200","price":5991.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0682\/7183\/3336\/files\/wafer-check-valve-lead-free-710739.jpg?v=1775620802","url":"https:\/\/fireprotectionparts.net\/products\/nibco-kw900w-wafer-check-valve-3-inch-to-12-inch","provider":"Fire Protection Parts","version":"1.0","type":"link"}