Description
The Watts F391011 Reduced Pressure Zone Backflow Preventer LF909M1-QT-FS is a potable water protection unit designed to prevent contaminated water from flowing into potable water supplies by protecting against backpressure and back siphonage conditions. It has a 1-1/2-inch FNPT connection. It reduces pressure zone design with independently operating check valves and a relief valve to maintain backflow protection under various pressure conditions in HVAC systems. It serves as a critical protection between potable and non-potable water sources. It continuously monitors pressure differentials and discharges through the relief valve when necessary, helping maintain water systems with cross-connection control requirements.
