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The Watts 0391011 LF909M1-QT Reduced Pressure Zone Backflow Preventer is essential for maintaining safe water quality in non-health, low hazard cross-connections. Designed for continuous pressure applications, this backflow preventer features a double check valve assembly.
Rated for supply pressures up to 175 psi and temperatures up to 140 degrees Fahrenheit.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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