Watts 174A 100 FS 3/4 - Part of the 174A Series ZC100F-8NH This 4 inch wafer style

This 4 inch wafer style butterfly valve

disc screw

sanitary solution

and a rubber diaphragm and disc

Heavy-duty body suited for rigorous environments

Watts 174A 100 FS 3/4 - Part of the 174A Series ZC100F-8NH This 4 inch wafer styleThis pressure relief valve has a 3 4 inch NPTF female inlet and outlet and a 100 psi pressure relief setpoint. The valve can be used for hot water space heating boiler applications to protect against excessive pressure. It features a bronze body, non metallic disc to metal seating, and test lever. Includes a nonrestrictive discharge drain line flood sensor with SentryPlus Alert technology to detect excessive water discharges from the relief valve.