Watts LF174A 090 FS 1 - Part of the LF174A Series ZA100F-6NH This 3-4 IN second check

This 3-4 IN second check detector valve replacement kit for series 775 and 775DCDA prevents the backflow of pollutants that are objectionable but not toxic

3/4 inch NPTF female outlet and a 50 psi pressure relief setpoint

For a secure seam

Blowout proof stem and O-ring seal

Watts LF174A 090 FS 1 - Part of the LF174A Series ZA100F-6NH This 3-4 IN second checkThis lead free pressure relief valve has a 1 inch NPTF female inlet and outlet and a 90 psi pressure relief setpoint. This valve can be used for hot water space heating boiler applications to protect against excessive pressure. It features a lead free copper silicon alloy 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