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Watts 3/4 In Bronze Dual Check Valve Backflow Preventer with Intermediate Atmospheric Vent, Female Union Inlet and Outlet Connections

SKU: 3631914

$238.00

Manufacturer’s List Price

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Product Details

Watts 3631914

This 3/4'' dual check valve backflow preventer with atmospheric vent prevents the reverse flow of hot or cold polluted water from entering into the potable water supply. This valve is designed for continuous pressure non-health hazard applications in smaller supply lines, such as laboratory equipment, processing tanks, sterilizers, dairy equipment, and specifically for boiler feed lines. It consists of a brass body with stainless steel internal parts, integral strainer, two durable tight seating rubber check valves, and NPT female inlet and outlet connections.


  • UPC 098268004281
  • Online Product ID 3631914
  • Weight 1.59 lbs.
  • Material Brass
  • Backflow Preventer Type Dual Check with Atmospheric Vent
  • Body Pattern In-Line
  • Buy American Act Compliant yes
  • Disc Material Rubber
  • Includes Intermediate Atmospheric Vent
  • Inlet Connection Size 0.75''
  • Inlet Connection Size Metric 20 mm
  • Inlet Connection Type Union Female Threaded
  • Inlet Thread Type NPT
  • Maximum Temperature Deg F 250
  • Maximum Working Pressure Psi 175
  • Minimum Temperature Deg F 33
  • Outlet Connection Size 0.75''
  • Outlet Connection Thread Type NPT
  • Outlet Connection Type Union Joint
  • Pressure Operation Continuous
  • Protection Type Backpressure and Backsiphonage
  • Seat Material Rubber
  • Series 9D
  • Strainer yes

Additional information

  • Compact design
  • Stainless steel internal parts
  • Forged brass body for durability
  • Horizontal or vertical installation

About This Brand

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