Watts 174A 135 FS 1 1/2 - Part of the 174A Series Woven Fabric 1 inch male NPT inlet

1 inch male NPT inlet by 1 inch union female NPT outlet

The Watts RD-980 is a large cast-iron ballast guard designed to protect roof drains on ballasted roofing systems

This kit consists of a second check with red silicone soft seat

UPC - 098268572247

Watts 174A 135 FS 1 1/2 - Part of the 174A Series Woven Fabric 1 inch male NPT inletThis pressure relief valve has a 1 1 2 inch NPTF female inlet and outlet and a 135 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.