Zurn 4" Wilkins 375AST SS Reduced Pressure Principle Assembly (LF)

4" Wilkins 375AST SS Reduced Pressure Principle Assembly (LF) Designed for installation on potable water lines to protect against both back-siphonage and back pressure of contaminated water into the potable water supply. The Model 375AST provides protection where a potential health hazard exists. Ideal for use where lead-free* valves are required.