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Kunkle Valve Models 300/600 Safety Relief Valves
Models 300/600 Safety Relief Valves
Cast steel, exposed spring valves that meet ASME section I for steam and ASME section VIII for air, gas and steam services


  • Heavy duty construction of high quality cast steel with stainless steel full-nozzle trim for optimum performance.
  • Bolted yoke design for easy maintenance.
  • Steel yoke incorporates a cover-shield for guiding surfaces and provides for fully exposed spring.
  • Seats lapped to optical flatness for tight shutoff.
  • Dual control rings offer easy adjustability for precision opening with minimum pre-open or simmer and exact blowdown control.
  • Heavy duty lift lever assembly.
  • All adjustments are factory sealed to help prevent tampering or disassembly.
  • Each valve tested and inspected for pressure setting and leakage.
  • Gags available.