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Watts 1/2" Threaded Backflow Preventer
Part 640180
Brand Watts
Free Shipping
in lower 48 states
Usually ships Next Day
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About this item

  • Watts® Threaded Backflow Preventer
  • 0.5" Threaded
  • 0.5" Dia
  • 4.94L x 2.56"H
  • Brass Body Construction With Stainless Steel Internal Parts
  • Temperature Range: 33 To 250°F
  • Minimum Working Pressure 25 PSI
  • Maximum Working Pressure: 175 PSI
  • Used In Hot Or Cold Water Applications And Can Be Used Under Continuous Pressure
  • Includes Primary And Secondary Check Valves
  • Mfg #950053
California residents: Prop 65 Warnings


This product can expose you to chemicals including Lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to

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