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Watts 1/2 x 1/2 In Lead Free Residential Dual Check Valve Backflow Preventer with Union Female NPT Inlet x Union Female NPT Outlet

SKU: 3631965

$161.00

Manufacturer’s List Price

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Product Details

Watts 3631965

This 1/2 by 1/2'' lead free dual check valve backflow preventer helps prevent the reverse flow of polluted water from entering into the drinking water supply at the service entrance or at individual outlets. The valve consists of a lead free brass body construction, with two plastic replaceable check valves, and stainless steel springs. It is designed for non-health hazard residential water system containment, continuous pressure applications and is to be installed immediately downstream of the residential water meter, in a vertical or horizontal position. The minimum working pressure is 10 psi (69 kPa) and maximum working pressure is 175 psi (12 bar).


  • Finish Bronze
  • UPC 098268533606
  • Online Product ID 3631965
  • Weight 0.96 lbs.
  • Material Brass
  • Backflow Preventer Type Dual Check
  • Body Pattern In-Line
  • Buy American Act Compliant yes
  • Disc Material Santoprene
  • Inlet Connection Size 0.5''
  • Inlet Connection Size Metric 15 mm
  • Inlet Connection Type Union Female Threaded
  • Inlet Thread Type NPT
  • Lead Free yes
  • Maximum Temperature Deg F 180
  • Maximum Working Pressure Psi 150
  • Minimum Temperature Deg F 33
  • Outlet Connection Size 0.5''
  • Outlet Connection Thread Type FPT
  • Outlet Connection Type Union Female Threaded
  • Pressure Operation Continuous
  • Protection Type Backsiphonage
  • Seat Material EPDM
  • Series LF7R

Additional information

  • Lead free brass body for durability
  • Meets ANSI/ASSE Standard 1024
  • Can be installed vertically or horizontally
  • Compact design

About This Brand

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