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Watts 1/4 IN Dual Check Valve Backflow Preventer, Female NPT End Connections

SKU: 3631908

$313.50

Manufacturer’s List Price

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Product Details

Watts 3631908

This 1/4'' dual check valve backflow preventer for carbonated beverage machines prevents the reverse flow of contaminated water, such as carbon dioxide gas and carbonated water, from entering into the potable water supply due to backpressure backflow. It consists of a stainless steel body construction with internal rubber components and is designed for continuous or intermittent pressure applications. It has female NPT end connections. It is ideal for use on post-mix carbonated beverage equipment and dispensing equipment for tea and coffee. Maximum working pressure is 200 psi (13.8 bar).


  • UPC 098268868678
  • Online Product ID 3631908
  • Weight 0.35 lbs.
  • Material Stainless Steel
  • Backflow Preventer Type Dual Check
  • Disc Material Santoprene
  • Inlet Connection Size 0.25''
  • Inlet Connection Size Metric 8 mm
  • Inlet Connection Type Female Threaded
  • Inlet Thread Type NPT
  • Lead Free yes
  • Maximum Temperature Deg F 110
  • Maximum Working Pressure Psi 200
  • Minimum Temperature Deg F 33
  • Outlet Connection Size 0.25''
  • Outlet Connection Thread Type NPT
  • Outlet Connection Type Female Threaded
  • Pressure Operation Continuous
  • Protection Type Backpressure
  • Seat Material Noryl
  • Series SD-2

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