Watts 174A 040 FS 1 - Part of the 174A Series ZA100F-8NH ZN415H-4NH

ZN415H-4NH

12" Diameter Combination Main Roof and Overflow Drain with Low Silhouette Domes and Double Top-Set® Deck Plate

or reduced pressure detector assembly

model BF-03-111-25-M2

Watts 174A 040 FS 1 - Part of the 174A Series ZA100F-8NH ZN415H-4NHThis pressure relief valve has a 1 inch NPTF female inlet and outlet and a 40 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. Sensor