Watts 174A 070 FS 1 1/2 - Part of the 174A Series ZA100F-4NH it excels in wet and

it excels in wet and moist environments

It comes with a stainless steel ball and stem for the 1 1/4 inch LFB6000

a flange with weepholes

which provides excellent tear and puncture resistance

effective vent area

Watts 174A 070 FS 1 1/2 - Part of the 174A Series ZA100F-4NH it excels in wet andThis pressure relief valve has a 1 1 2 inch NPTF female inlet and outlet and a 70 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.