Watts 174A-55 1 1/4 - Part of the 174A Series American Wick Drain and relief valve spring

and relief valve spring

It is factory air charged at 60 psi (4

and a bronze feed water pressure regulator

ZB415K-3IP

Its cast-iron body delivers long-term durability

Watts 174A-55 1 1/4 - Part of the 174A Series American Wick Drain and relief valve springThis 1 1 4 inch boiler pressure relief valve is used in hot water heating and domestic supply boiler applications to protect against excessive pressures on all types of hot water heating supply boiler equipment. It consists of a bronze body construction with NPT threaded female inlet and NPT threaded female outlet (drain) connections, non metallic disc to metal seating, stainless steel spring, and test lever. It resists corrosive water conditions,