Watts LF909M1-QT-S-HW 2 - Part of the LF909 Small Series ZC100F-4NH it serves as a pressure

it serves as a pressure relief control valve

50 Minimum Temperature-Fahrenheit 33 Outlet Connection Size 4 IN Outlet Connection Type Grooved Joint Outlet Shutoff Valve Type Non Rising Stem Gate Valve Outlet Thread Type Does Not Apply To Product Part Number F111827 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

Channel 3 is a sloped section with an invert depth range from 5

ZN400N-3IC

The pressure is rated 600 psi (41

Watts LF909M1-QT-S-HW 2 - Part of the LF909 Small Series ZC100F-4NH it serves as a pressureThis 2 inch lead free reduced pressure zone backflow preventer assembly with its exclusive design incorporating the patented air in and water out principle for protection during an emergency condition prevents the flow of polluted water from entering into the potable water supply due to backsiphonage and or backpressure in accordance with national plumbing codes and water authority requirements. Its compact modular design facilitates easy maintenance