WATTS® Lead Free Reduced Pressure Zone Assembly, Series: LF909, 3 in Nominal, 175 psi Working, 33 to 110 deg F Continuous/140 deg F Intermittent, 7.5 fps, Resilient Seated Gate Valve Ball Valve/Gate Valve type, Cast Copper Silicon Alloy Body, Epoxy Coated, 42-1/4 in L
Series LF909 Reduced Pressure Zone Assemblies are designed to provide cross-connection control protection of the potable water supply in accordance with national plumbing codes. This series can be utilized in a variety of installations, including health hazard cross connections in plumbing systems or for containment at the service line entrance. With its exclusive relief valve design incorporating the "air-in/water-out" principle, it provides substantially improved relief valve discharge performance during the emergency conditions of combined backsiphonage and backpressure with both checks fouled. The LF909 features Lead Free construction to comply with Lead Free installation requirements.