3" Reduced Pressure Detector Assembly (957RPDA-OSY-CFM) Zoom

3" Reduced Pressure Detector Assembly (957RPDA-OSY-CFM)


Brand: Watts

Qty Price
/ each
Non-Stock ItemAllow 7-10 Days to Ship Out

Do not use this item for any installation or repair of potable water applications. This product does not comply with the "Safe Drinking Water Act," which requires that products meet low-lead standards in order to be used in systems providing water for human consumption (drinking or cooking). This item is for non-potable (non-human consumption) water applications only.




Size: 3"
Material: Stainless Steel
Max Temp (F): 140°F
Min Temp (F): 33°F
Max. Working Pressure: 175 psi
Features: UL/FM outside stem and yoke resilient seated gate valves
Product Type: Backflow Preventer

Description for Watts 0111621

Note: This item does not comply with the 2014 Lead Free Act. It may not be used in potable water applications as of January 4, 2014.

957RPDA Reduced Pressure Detector Assemblies prevent the reverse flow of fire protection system substances from being pumped or siphoned into the potable water supply. The 957RPDA incorporates a meter to detect ground leaks and unauthorized illegal taps, greatly reducing annual water expenses. It consists of a compact, stainless steel body with stainless steel internal parts, two check valves, a pressure-differential relief valve, shutoff valves, torsion spring checks and relief valve, and bronze, nickel-plated test cocks. Series 957RPDA is 70% lighter than traditional designs and is ideal for health hazard cross-connection, such as on fire sprinkler systems. Check with local water authorities for installation requirements. Maximum Working Pressure: 175psi (12.06 bar).


  • Extremely compact design
  • 70% lighter than traditional designs
  • 304 (Schedule 40) stainless steel housing & sleeve
  • Groove fittings allow integral pipeline adjustment
  • Patented torsion spring check provides lowest pressure loss
  • Unmatched ease of serviceability
  • Replaceable check disc rubber
  • Available with grooved butterfly valve shutoffs
  • Bottom mounted cast stainless steel relief valve
  • Metered bypass to detect leakage or theft of water from the fire sprinkler system

    PLEASE NOTE: The product weighs 213 lbs. and may require the use of a
    lift gate.
    If you do require a lift gate at your delivery, you'll have the option to add this FREE of charge when you checkout.
  • 3" Reduced Pressure Detector Assembly (957RPDA-OSY-CFM)

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