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Boiler pressure relief valves are 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
Series 174A resists corrosive water conditions, sticking and freezing and prevents water and sediment from being trapped in the seat
It is designed for emergency safety relief and shall not be used as an operating control
For pressure protection of hot water heating boilers