Watts 774-LF 12 - Part of the 774 Series roof-hatch-finder Pressure relief is set at

Pressure relief is set at 35 psi (2

50 Minimum Temperature-Fahrenheit 33 Outlet Connection Size 4 IN Outlet Connection Type Flanged Joint Outlet Shutoff Valve Type Outside Stem And Yoke Gate Valve Outlet Thread Type Does Not Apply To Product Part Number F111592 Polymer Coating No Pressure Operation Continuous Protection Type Backpressure and Backsiphonage Seat Material Engineered Plastic Series 957 Strainer No Technologies Flood Detection Tradename None Specification Sheet - 957

Connect the Mini™ Channel Drain to drain fitting for outletting with the Mini Channel Drain End Outlet

It features a 12 3/4 inch square fixed top with heel-proof ductile iron grate

It is a self contained device consisting of disc-to-metal seating

Watts 774-LF 12 - Part of the 774 Series roof-hatch-finder Pressure relief is set atThis 12 inch lead free double check valve backflow preventer assembly is designed to prevent the reverse flow of contaminated water of non potable quality from being pumped or siphoned into the potable water supply due to backsiphonage and or backpressure in accordance with national plumbing codes and water authority requirements. It is ideal for protection at cross connections identified as non health hazard applications and from other contaminants