Hot Water Boiler Pressure Relief Valve

The Watts 474A pressure relief valve discharges water from a hot water heating boiler in case of emergency. This pressure relief mechanism is made of bronze, has a 3/4" female inlet, and a 3/4" female outlet.

Use only for emergency safety relief; not for operating control.

Details and Specifications:

• Material: Bronze
• Pressure Set Point: 125 PSI
• Inlet Port: 3/4" female
• Outlet Port: 3/4" female outlet
• Maximum Temperature: 250° Fahrenheit
• 1,700,000 Btu/Hr. rating
• Non-metallic disc-to-metal seating

Features:

• Seat elevated above outlet
• Non-mechanical seat-to-disc alignment
• Water seal of high temperature resisting material isolates spring working parts from water during relief

WARNING: This product can expose you to chemicals including Lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm (For more information go to www.p65warnings.ca.gov).