{"product_id":"4-deringer-30g-gpm","title":"4 DERINGER 30G GPM","description":"\u003cp\u003eThe 4 inch Ames Deringer™ 30G Double Check Detector Valve Assembly (DCDA-II) is designed to prevent non-health hazard pollutants from entering a potable water supply system. It is primarily used on fire sprinkler systems for monitoring unauthorized water usage.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDesign \u0026amp; Operation\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003ePatented \u003cstrong\u003eDual-action™ check modules\u003c\/strong\u003e operate as a \u003cstrong\u003epoppet style\u003c\/strong\u003e check under low flow conditions and a \u003cstrong\u003eswing style\u003c\/strong\u003e check under high flow.\u003c\/li\u003e\n\u003cli\u003eCheck modules utilize replaceable \u003cstrong\u003esilicone elastomer sealing discs\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eAssembly is approved for both horizontal and vertical applications.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTamper-resistant test cocks\u003c\/strong\u003e operate via a tamper resistant actuator.\u003c\/li\u003e\n\u003cli\u003eSingle full access service port with an \"inline\" replaceable elastomer cover seal.\u003c\/li\u003e\n\u003cli\u003eAssembly is serviceable without special tools.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eValves \u0026amp; Connections\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eIncludes two resiliently seated and inline serviceable \u003cstrong\u003eAWWA C509 OS\u0026amp;Y gate valves\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eGate valves feature a \u003cstrong\u003estainless steel stem\u003c\/strong\u003e with pre-machined groove for supervisory tamper switch installation.\u003c\/li\u003e\n\u003cli\u003eFlanged end \u003cstrong\u003eANSI B16.1 Class125\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlexible groove coupling UL\/FM\u003c\/strong\u003e between body and gate valves.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eBypass \u0026amp; Monitoring\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eLead Free* bronze bypass components.\u003c\/li\u003e\n\u003cli\u003eBypass assembly includes a \u003cstrong\u003eGPM bypass meter\u003c\/strong\u003e and a \u003cstrong\u003esingle check valve\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eStem includes \u003cstrong\u003etamper switch groove\u003c\/strong\u003e for supervisory switches.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Water Specialties Company","offers":[{"title":"Default Title","offer_id":49796803789077,"sku":"D-4030G-GPM","price":3530.86,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0874\/6506\/6773\/files\/183456.jpg?v=1772730461","url":"https:\/\/www.backflowpreventer.com\/products\/4-deringer-30g-gpm","provider":"Water Specialties Company","version":"1.0","type":"link"}