Watts 174A 040 FS 3/4 - Part of the 174A Series ZA100F-4NH Features For service and maintenance

Features For service and maintenance in the field

Specifications Body Material Ductile Iron Brand Watts Buy American Act Compliant NO Class Rating 125 or 150 Control Type Lever Handle CV Rating 600 GPM Disc Material Aluminum Bronze EAN 098268606508 Inlet Connection Size 4 IN Inlet Connection Type Wafer Lead Free YES Maximum Operating Temperature-Fahrenheit 248 Maximum Working Pressure-PSI 200 Minimum Temperature-Fahrenheit 33 Operating Torque-Dry 644 in-lbs Operating Torque-Wet 390 in-lbs Outlet Connection Size 4 IN Outlet Connection Type Wafer Part Number 0525827 Seat Material EPDM Series BF-04 Silicone Free Yes Stem Shaft Material 416 Stainless Steel Valve Style Wafer Specification Sheet - BF-03-M2

The standard setting is 50 psi (345 bar)

Z415M-4NH-SB

Watts 174A 040 FS 3/4 - Part of the 174A Series ZA100F-4NH Features For service and maintenanceThis pressure relief valve has a 3 4 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.