3" 757 Double Check Valve Assembly (OSY) Zoom

3" 757 Double Check Valve Assembly (OSY)


Brand: Watts

Qty Price
/ each
Non-Stock ItemAllow 3-5 Days to Ship Out



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

Description for Watts 0111511

Series 757, 757N Double Check Valve Assemblies are used to prevent backflow of non-health hazard pollutants that are objectionable but not toxic, from entering the potable water supply system. Series 757, 757N may be installed under continuous pressure service and may be subjected to backpressure and backsiphonage. Series 757, 757N consists of two independently operating check valves, two shutoff valves, and four test cocks.


  • Extremely compact design
  • 70% Lighter than traditional designs
  • 304 (Schedule 40) Stainless steel housing & sleeve
  • Groove fittings allow integral pipeline adjustment
  • Patented tri-link check provides lowest pressure loss
  • Unmatched ease of serviceability
  • Replaceable check disc rubber

    PLEASE NOTE: The product weighs 323 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" 757 Double Check Valve Assembly (OSY)

    Q&A: Ask the Questions, share answers