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Steam Safety Relief Valves, ASME Section IV

Series 315-M2 Steam Safety Relief Valves are used in commercial and industrial applications for low-pressure steam heating boilers and process equipment. They have a bronze body construction with NPT threaded male inlet and threaded female outlet (drain) connection, stainless steel spring, top-guided stem, and non-stick Teflon disc-to-metal seating. ASME Section IV at 15psi (103 kPa) set point.


  • Bronze body and stainless steel spring
  • High-capacity valve protects low pressure steam heating and process equipment
  • Seat is located above drain to prevent water from being trapped and sediment from fouling the seat
  • Top guided stem and non-sticking Teflon disc assures positive shutoff

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Select options below to identify the UPC, Order Code, and Repair Kit for a specific 315-M2

Approval Information

For approval information, please refer to the products specification sheet. For any other information on product certification and documentation information, please visit our certification partner websites: