{"product_id":"4-957n-dosy","title":"4 957N-DOSY","description":"\u003cp\u003eThis \u003cstrong\u003e4 inch N-pattern Reduced Pressure Zone (RPZ) assembly backflow preventer\u003c\/strong\u003e provides essential protection to the potable water system, preventing contamination from backsiphonage or backpressure in accordance with national plumbing codes. This compact assembly is approved for \u003cstrong\u003ehorizontal installation\u003c\/strong\u003e, provided it is installed in alignment with the flow arrow.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eFeatures \u003cstrong\u003edomestic outside stem and yoke (OSY) resilient seated gate valves\u003c\/strong\u003e for reliable shutoff.\u003c\/li\u003e\n\u003cli\u003eConstructed with a \u003cstrong\u003e304 (Schedule 40) stainless steel housing and sleeve\u003c\/strong\u003e for durability.\u003c\/li\u003e\n\u003cli\u003eUtilizes patented \u003cstrong\u003etorsion spring check modules\u003c\/strong\u003e designed for lowest pressure loss and unmatched ease of serviceability.\u003c\/li\u003e\n\u003cli\u003eIncludes a \u003cstrong\u003ebottom-mounted cast stainless steel relief valve\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGroove couplings\u003c\/strong\u003e facilitate integral pipeline adjustment and ease of installation.\u003c\/li\u003e\n\u003cli\u003eEquipped with a \u003cstrong\u003eflood sensor on the relief valve\u003c\/strong\u003e to detect excessive water discharges, capable of triggering notifications when activated with an add-on connection kit.\u003c\/li\u003e\n\u003cli\u003eDesigned for \u003cstrong\u003ehealth hazard applications\u003c\/strong\u003e and continuous pressure piping.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eConstruction Materials\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eHousing \u0026amp; Sleeve: \u003cstrong\u003e304 (Schedule 40) stainless steel\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eElastomers: \u003cstrong\u003eEPDM\u003c\/strong\u003e, \u003cstrong\u003eSilicone\u003c\/strong\u003e, and \u003cstrong\u003eBuna-N\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eTorsion Spring Checks: \u003cstrong\u003eNoryl®\u003c\/strong\u003e, \u003cstrong\u003eStainless Steel\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eCheck Discs: \u003cstrong\u003eReversible Silicone\u003c\/strong\u003e or \u003cstrong\u003eEPDM\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eTest Cocks: \u003cstrong\u003eLead Free* bronze body\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003ePins \u0026amp; Fasteners: \u003cstrong\u003e300 Series Stainless Steel\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eSprings: \u003cstrong\u003eStainless steel\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cem\u003eNotice: An add-on connection kit is required to activate the flood sensor's communication features. Without it, the sensor acts as a passive component. Watts is not responsible for alert failures due to connectivity issues or improper installation.\u003c\/em\u003e\u003c\/p\u003e","brand":"Water Specialties Company","offers":[{"title":"Default Title","offer_id":49796722753813,"sku":"0113046","price":15071.59,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0874\/6506\/6773\/files\/180209.jpg?v=1772727680","url":"https:\/\/www.backflowpreventer.com\/products\/4-957n-dosy","provider":"Water Specialties Company","version":"1.0","type":"link"}