740 ASME Boiler Pressure Relief Valve

Manufactured by: Watts Water Technologies

Model: 740

Series 740 Boiler Pressure Relief Valves are used in hot water space heating boiler applications to protect against excessive pressure on all types of hot water space heating boiler equipment. It consists of a iron body construction with expanded outlet drain connections for hot water space heating boilers, non-metallic disc-to-metal seating, stainless steel spring, and test lever. Series 740 offers large discharge capacity, resists corrosive water conditions, resists 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.

Additional Information

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Technical Data

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Available Materials:

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Cast Iron

Pressure Rating:
30 psi @ 925000 BTU/hr to 75 psi @ 10700000 BTU/hr

Available Sizes:

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3/4in, 1in, 1-1/4in, 1-1/2in, 2in

See product datasheet for additional details