Watts 1 LF007M1 QT 1 inch LF007M1 QT 1 Double Check Valve 0063232 Spacing_6" Brand: Felco SKU: F4 Brand: Felco SKU: F4 What power supply does it require 50 Minimum Temperature Fahrenheit 33 Outlet Connection Size 1 IN Outlet Connection Type Female Threaded Outlet Shutoff Valve Type Quarter Turn Ball Valve Outlet Thread Type NPT Part Number 0063232 Polymer Coating No Pressure Operation Continuous Protection Type Backpressure and Backsiphonage Seat Material Engineered Plastic Series LF007 Strainer No Tradename None Type Kit This 1 inch lead free double check valve backflow preventer assembly is designed to prevent the backflow of polluted water from entering into the potable water supply due to back siphonage and or backpressure in accordance with national plumbing codes and water authority requirements