WA800QTK MFG #: 800M4QT-1
  • Brand: Watts®
  • Applicable Standard: CSA (Canada and US), ISO 9001, UPC
  • Body Material: Bronze
  • Dimensions: 7-1/2 in L x 7-1/2 in H
  • End Connection: Female Threaded x Female Threaded
  • Flow Rate: 7.5 fps
  • Nominal Size: 1 Inch
  • Port Type: Drain/Blow Down
  • Pressure Rating: 150 psi
  • Series: 800M4-QT
  • Temperature Rating: 33 to 140
Series 800M4QT Anti-Siphon Pressure Vacuum Breakers prevent the reverse flow of polluted water from entering into the potable water supply due to backsiphonage. It consists of bronze body construction, silicone rubber check valve disc, plastic check valve seat, stainless steel springs, a bonnet with silicone rubber O-ring seal, a lightweight plastic disc float, tee handle or lever handle shutoffs, and test cocks for winterization draining. Series 800M4QT is ideal in health hazard continuous pressure applications such as irrigation systems and industrial process water systems where the water enters the equipment at or below its flood rim. Maximum Pressure:150 psi (10.3 bar), Minimum Pressure: 15 psi (55 kPa).
  • Features and More


  • Designed to Prevent Backsiphonage of Contaminated Water into a Potable Water Supply
  • Replaceable Plastic Seat
  • Easy Maintenance of Internal Parts
  • Acetal Bonnet Acts as Freeze Plug to Prevent Body Damage
  • O-Ring Bonnet Seal for Less Possibility of Fouling
  • Silicone Seat Disc for Durability
  • Test Cocks Positioned for Easy Testing and Winterization
  • Compact Space Saving Design
  • No Special Tools Required for Servicing
  • Bronze Body for Durability


    1/4 Turn Ball Valve, Tee Handle Shut-Off, Test Cock