Kunkle Series 6000 Safety Valves

Safety And Relief Products

Bronze safety valves to ASME section I and VIII, steam, ‘V’ and ‘UV’; section VIII, air/gas, ‘UV’ National Board certified including models to ASME section IV, steam ‘HV’. PED certified for non-hazardous gas


  • O-ring seats available for exceptional leakfree performance, reduced maintenance cost, multiple cycles with tight shutoff and improved seating integrity.
  • Heavy duty casting.
  • Wide hex on valve nozzle provides clearance for easy installation.
  • Seats lapped to optical flatness.
  • Dual control rings offer easy adjustability for precise opening with minimum pre-open or simmer and exact blowdown control.
  • Pivot between disc and spring corrects misalignment and compensates for spring side thrust.
  • Grooved piston type disc reduces sliding area and friction.
  • Heavy duty lift lever assembly.
  • Each valve tested and inspected for pressure setting and leakage.

General Application

A range of valves suitable for overpressure relief and protection of pumps, tanks, lines and hydraulic systems; pressure regulation and continuous by-pass relief.

Technical Data

Connections: Threaded NPT or flanged
Temperature range: -60° to 406°F (-51° to 208°C)
Pressure range[1]: 1 to 500 psig (.07 to 20.7 barg)

1. See page 5 for specifications table