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374A Watts

Boiler Pressure Relief Valves

Series 374A Boiler Pressure Relief Valves are used in hot water boiler applications to protect against excessive pressure on all types of hot water heating boiler equipment. They have an iron body construction with forged bronze inlet connections, non-metallic disc-to-metal seating, stainless steel spring, and test lever. Series 374A 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. Standard Pressure Setting: 30psi (206.9 kPa). Pressure range: rated up to 550,000 BTU/hr at a 30psi (2 bar) setting only.

Features

  • Seat is located above drain to prevent water from being trapped and sediment from fouling the seat
  • Iron body and stainless steel spring
  • Non-mechanical seat-to-disc alignment will not stick or freeze
  • Valve protects hot water boiler equipment from excessive pressure

Select a Model

Select options below to identify the UPC, Order Code, and Repair Kit for a specific 374A

Approval Information

For the latest product certification information and documentation, please visit our certification partner websites: