Water Pressure Relief Valves

Series 174A - ASME Water Pressure Safety Relief Valves
For hot water heating and supply boilers - Bronze body
¾" to 2" (20 - 50 mm)

Series 374A - ASME Water Pressure Safety Relief Valves
For hot water heating and supply boilers - Iron body with bronze inlet
¾" (20 mm)

Series 740 - ASME Water Pressure Safety Relief Valves
For hot water heating and supply boilers - Iron body
¾" to 2" (20 - 50 mm)

Series 1L/1XL/10L/100XL - Self-closing T & P Safety Relief Valves
For hot water storage tanks and heaters
½" and ¾" N.P.T. threaded male inlet x female outlet

Series SL100XL, L100XL, LL100XL and LLL100XL
- Extended Shank T & P Safety Relief Valves
For hot water storage tanks and heaters
¾" N.P.T. threaded male inlet x female outlet

Series 40/140/240/340/342 - ASME Rated, Automatic Reseating T & P Relief Valves
For hot water supply tanks and heaters
¾" to 2" N.P.T.

Series FP53L - Pressure Relief Valves
For fire protection grid systems - UL listed
½" N.P.T. threaded male inlet x female outlet

Model N36 - Water Service Vacuum Relief Valves
Automatically vents a closed system if vacuum occurs
½" and ¾" N.P.T. threaded male inlet

Model 210 - Immersion Type Temperature Gas Shut-Off Valves
For hot water storage heaters
¾" N.P.T. male connection