2-1/2" x 2-1/2", Flanged x Flanged, 175 PSI, 350 GPM, Lead-Free, 304 Stainless Steel, In-Line, Compact, Reduced Pressure Zone Backflow Preventer Assembly with Non-Rising Stem Resilient Seated Gate Valve
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Reduced Pressure Zone Assemblies Provide Protection to the Potable Water System from Contamination in Accordance with National Plumbing Codes. Series 957, 957N, 957Z are Normally Used in Health Hazard Applications for Protection Against Backsiphonage or Backpressure; ; Replaceable Check Disc Rubber; Extremely Compact Design; 70% Lighter than Traditional Designs; 304 (Schedule 40) Stainless Steel Housing and Sleeve; Groove Fittings Allow Integral Pipeline Adjustment; Patented Torsion Spring Check Provides Lowest Pressure Loss; Unmatched Ease of Serviceability; Bottom Mounted Cast Stainless Steel Relief Valve; Lead-Free
Reduced Pressure Zone Backflow Preventer Assembly; Type Reduced Pressure Zone Assembly, Continuous Pressure; Valve Configuration In-Line; Nominal Size 2-1/2 Inch x 2-1/2 Inch; End Connection Flanged x Flanged; End to End Distance 30-3/4 Inch; Body Material Stainless Steel; Disc/Poppet Material Silicone; Seat Material Engineered Plastic; Temperature Rating 33 to 140 Deg F; Pressure Rating 175 PSI; Inclusions/Features Non-Rising Stem Gate Shut-Off Valve; Exclusions Strainer, Cap and Tether, Elbow Fitting, Hot and Harsh Water, Polymer Coating, Bypass, Hydrant Connection; Application Health Hazard; Lead-Free; Protection Type Backpressure and Backsiphonage
This 2 1/2 inch stainless steel reduced pressure zone assembly backflow preventer helps prevent the reverse flow of contaminated water from being pumped or siphoned into the potable water supply due to backsiphonage and or backpressure in accordance with national plumbing codes and water authority requirements. This extremely compact and lighter than a traditional designed assembly is approved for horizontal installation in accordance with the direction of the flow arrow. It is ideal for protection in continuous pressure piping applications and at cross-connections identified as health hazards and from other contaminants found at the service line entrance. This assembly consists of a stainless steel body with a quick access sleeve, torsion spring check valves, resilient seated gate valves with non-rising stem, test cocks, and a corrosive resistant stainless steel bottom mounted pressure relief valve.
