WATTS® 174A Series 0274598 Water Pressure Relief Valve, 3/4 in Nominal, FNPT, 75 psi, 250 deg F, Bronze Body

This 3/4 in 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 FNPT threaded inlet and FNPT threaded outlet (drain) connections, non-metallic disc-to-metal seating, stainless steel spring and test lever. It 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, not as an operating control. The pressure relief is set at 75 psi (517.1 kPa) with corresponding high-pressure ratings up to 1320000 Btu/hr, 1320000 Btu/hr.

WATTS® Water Pressure Relief Valve, 174A Series, 3/4 in Nominal, FNPT Connection, 75 psi Pressure, Media: Water, Lever Handle Actuator, Bronze Body, Stainless Steel Handle, 250 deg F, Dimensions: 2-3/4 in L x 4-1/2 in H

• Safety relief valves for pressure protection only of all types of hot water heating boiler equipment
• Seat located above drain, water can't be trapped and sediment can't foul seat
• Non-mechanical seat-to-disc alignment will not stick or freeze
• Each hot water space heating boiler shall be equipped with a pressure relief valve set to relieve below the maximum boiler working pressure
• Water seal of high-temperature resisting material isolates spring working parts from water during relief

• Specification Sheet https://assets.unilogcorp.com/267/ITEM/DOC/WATTS_0274598_Specification_Sheet.pdf