WATTS® Lead Free Double Check Valve Assembly, Series: LF919, 2 in Nominal, NPT, 175 psi, 33 to 180 deg F, Quarter-Turn Resilient Seated Ball Valve Ball Valve/Gate Valve type, Reduced Pressure Zone Backflow Type, Full Port, Cast Copper Silicon Alloy Body, 21-1/16 in L x 12-1/16 in H
Series LF919 Lead Free Reduced Pressure Zone Assemblies prevent the reverse flow of contaminated water from entering into the potable water supply due to back siphonage and or backpressure. It consists of a Lead Free cast copper silicon alloy body construction, two poppet style check valves and replaceable check seats, with an intermediate relief valve. Series LF919's compact modular design facilitates easy maintenance and assembly access. It is ideal for protection at health hazard cross-connections or for containment at the service line entrance. Check with local water authorities for installation requirements.