4", Flanged x Flanged, 175 PSI, Lead-Free, Epoxy Coated, Ductile Iron, Double Check Detector, Backflow Preventer with Outside Screw and Yoke Gate Valve

Short Lay-Length for Small Space Installation and Single Access Cover Reduces Maintenance Downtime; For Use in Low Health Hazard Application; Reliable Performance and Improved Flow Characteristic from Patented Compound Check; Approved in Horizontal and Vertical Position; No Thread or Taps in Body or Cover, Eliminating Exposure to Corrosion; Retrofit; Lead-Free; Water Saving

Backflow Preventer; Type Double Check Detector; Nominal Size 4 Inch; End Connection Flanged x Flanged; End to End Distance 37-5/8 Inch; Body Material ASTM A536 Epoxy Coated Ductile Iron; Disc/Poppet Material EPDM; Spring Material 300 Series Stainless Steel; Seat Material Noryl Polymer; Temperature Rating 140 Deg F; Pressure Rating 175 PSI; Inclusions/Features ASTM A536 Epoxy Coated Ductile Iron Access Cover, 300 Series Stainless Steel Fastener, Outside Screw and Yoke Gate Valve; Application Fire Protection, Potable Water; Applicable Standard NSF/ANSI 61, ASSE 1048, AWWA C510/C550, ANSI B16.1, ASSE 1048, NYC MEA 147-99-M, CSA B64.5, UL, ULC, FM; Lead-Free; Hydrostatic Test Pressure 350 PSI