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Model 475MS


Zurn Wilkins Model 475MS

Zurn Wilkins Lead-Free Reduced Pressure Principle Assembly with Integral Relief Valve Monitor Switch

Ideal where Lead-Free* valves are required. Designed for installation on potable water lines to protect against both backsiphonage and backpressure of contaminated water into the potable water supply. Assembly shall provide protection where a potential health hazard exists. In the event of a backflow condition, the relief valve closes an electrical contact on the MS switch, signaling that a possible relief valve discharge may be occurring. The 475MS is ideal for use in mechanical rooms, basements and enclosures where undetected relief valve discharge could potentially cause water damage.


2 1/2" - 10"

VIDEO: Troubleshooting Reduced Pressure Principle Relief Valve Discharge