{"product_id":"watts-88003138","title":"Watts 774DCDA-OSY-TS-GPM 8 Double Check Backflow Preventer, Stainless, Flanged","description":"\u003cp\u003eThe Watts 774DCDA-OSY-TS-GPM 8 is a 8\" double check detector assembly (DCDA) with Flanged connections, approved for low health hazard protection. It features a stainless body. Rated to 175 psi and 33°F to 110°F.\u003c\/p\u003e\u003cp\u003eThis 8 inch double check detector backflow preventer assembly prevents the backflow of fire protection system substances from being pumped or siphoned into the potable water supply. It is designed for installation on applications identified by local authorities as non-health hazard, such as on fire protection systems. This assembly consists of a compact construction and short lay length, ideal for retrofit installations and can be installed in a horizontal or vertical flow-up position. It features a lightweight stainless steel body, thermoplastic and stainless steel check valves that provide low head loss. It has a gallons per minute meter, outside stem and yoke shutoffs, and tamper switch. The maximum working pressure is 175 psi (12.06 bar).\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eIncludes UL-listed fire tamper supervisory switch\u003c\/li\u003e\n\u003cli\u003eStainless steel for corrosion resistance\u003c\/li\u003e\n\u003cli\u003eDesigned for minimum head loss\u003c\/li\u003e\n\u003cli\u003e150 pound ANSI\/AWWA CL D flanged\u003c\/li\u003e\n\u003cli\u003eOutside stem and yoke shutoffs\u003c\/li\u003e\n\u003cli\u003eIncludes: Tamper Switch\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCommon Questions\u003c\/strong\u003e\u003c\/p\u003e\u003cdl\u003e\n\u003cdt\u003e\u003cstrong\u003eWhat hazard level is this DCDA approved for?\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eIt is rated for low health hazard (non-toxic, \"pollutant\") cross-connections only. Where the substance downstream could be a health hazard, codes require a reduced pressure zone (RPZ) assembly instead. The assembly is listed to ASSE 1048.\u003c\/dd\u003e\n\u003cdt\u003e\u003cstrong\u003eCan this be installed on potable water?\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eNo. This model is not certified lead-free, so it may not be installed in potable water systems in states enforcing the NSF\/ANSI 372 weighted-average lead rule. Use it on non-potable service — fire lines, irrigation or industrial water — or order the LF (lead-free) version of this model for drinking-water use.\u003c\/dd\u003e\n\u003cdt\u003e\u003cstrong\u003eDoes this assembly have to be tested every year?\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eYes. This is a field-testable assembly. Most water authorities require it to be tested and certified by a licensed backflow tester at installation and annually thereafter.\u003c\/dd\u003e\n\u003cdt\u003e\u003cstrong\u003eWhat shutoff valves are included?\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eIt is supplied with outside screw and yoke (OS\u0026amp;Y) gate valves on the inlet and outlet. OS\u0026amp;Y gates give the visible open\/shut indication that fire-line and many water-authority specs require.\u003c\/dd\u003e\n\u003cdt\u003e\u003cstrong\u003eIs this suitable for a fire sprinkler line?\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eYes. Detector assemblies are built for fire sprinkler service: the metered bypass registers the low flows that reveal a leak or an unauthorized tap on the fire line. This model is UL Classified and FM Approved. The bypass meter reads in GPM.\u003c\/dd\u003e\n\u003cdt\u003e\u003cstrong\u003eHow does this have to be installed?\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eIt is approved for either horizontal or vertical installation, with the flow arrow on the body pointing in the direction of flow.\u003c\/dd\u003e\n\u003c\/dl\u003e\u003cp\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Double Check\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSize:\u003c\/strong\u003e 8\"\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInlet Size:\u003c\/strong\u003e 8\"\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOutlet Size:\u003c\/strong\u003e 8\"\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConnection:\u003c\/strong\u003e Flanged\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBody Material:\u003c\/strong\u003e Stainless\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMax Pressure (psi):\u003c\/strong\u003e 175\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e Fire Protection\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBackflow Protection:\u003c\/strong\u003e Backpressure\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOperation:\u003c\/strong\u003e Continuous\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCountry of Origin:\u003c\/strong\u003e United States\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1 Year Limited\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMPN:\u003c\/strong\u003e 774DCDA-OSY-TS-GPM 8\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTemperature:\u003c\/strong\u003e 33°F to 110°F\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCertifications:\u003c\/strong\u003e CSA-B64, UL, FM\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLead-Free:\u003c\/strong\u003e No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAssembly Type:\u003c\/strong\u003e DCDA\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHazard Protection Level:\u003c\/strong\u003e Low Health Hazard\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eASSE Standard:\u003c\/strong\u003e ASSE 1048\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUSC FCCCHR Approved:\u003c\/strong\u003e No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFire Protection Listing:\u003c\/strong\u003e UL Classified;FM Approved\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eField Testable:\u003c\/strong\u003e Yes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShutoff Valves:\u003c\/strong\u003e OSY Gate\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApproved Orientation:\u003c\/strong\u003e Horizontal \u0026amp; Vertical\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlood Sensor (SentryPlus Alert):\u003c\/strong\u003e No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStrainer Included:\u003c\/strong\u003e No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAir Gap Fitting Included:\u003c\/strong\u003e No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBypass Meter:\u003c\/strong\u003e GPM\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Watts","offers":[{"title":"Default Title","offer_id":54935300669739,"sku":"88003138","price":19634.63,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0277\/3168\/9577\/files\/eeec3003a2bc557031316ea956451257023b6fcc_e60a1257-ca38-49ec-84b9-395e344e8b01.jpg?v=1785983520","url":"https:\/\/citysupplygroup.com\/products\/watts-88003138","provider":"City Supply","version":"1.0","type":"link"}