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You are here: Home > Lawn Irrigation > Backflow Preventers > Watts 800M4 Backflow Preventers

Watts 800M4 Backflow Preventers (PVBs)

Designed to prevent back-siphonage of contaminated water into a potable water supply. The Watts 800M4 backflow PVB valve is ideally suitable for irrigation systems, industrial process water systems and other continuous pressure piping system applications where the water enters the equipment at or below its flood rim.

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Watts 800M4-QT - 3/4 Inch Backflow Preventer
Watts 800M4-QT 3/4 in. PVB Backflow Preventer
  • 3/4" anti-siphon pressure vacuum breaker
  • Prevent back-siphonage of contaminated water into drinking water
  • Maximum Operating Pressure: 150 psi (10.3 bar)
  • Note: Needs to be protected from ice damage


Our Price: $107.41
Sale Price: $83.26
You save $24.15!
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Watts 800M4-QT - 1 Inch Anti-Siphon Backflow
Watts 800M4-QT 1 in. Backflow Preventer
  • 1" anti-siphon pressure vacuum breaker
  • Prevent back-siphonage of contaminated water into drinking water
  • Maximum Operating Pressure: 150 psi (10.3 bar)
  • Note: Needs to be protected from ice damage

Our Price: $115.24
Sale Price: $87.88
You save $27.36!
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