Kunkle Models 215v/337 Vacuum Relief And Safety Valve

Safety And Relief Products

Cast iron non-code vacuum relief and ASME Section VIII air/gas, ‘UV’, National Board certified safety valves, both PED certified for non-hazardous gas


  • Large nozzle design provides high capacity.
  • Flat bronze valve seats are lapped for optimum performance.
  • Warn ring offers easy adjustability for precise opening with minimum pre-open or simmer.
  • Pivot between disc and spring corrects misalignment and compensates for spring side thrust.
  • Model 215V has seal cap for vacuum service.
  • Model 337 has ‘lift-pin’ lift device for easy manual testing.
  • Bronze nozzle and disc as standard. Optional SS trim available.
  • Each valve tested and inspected for pressure setting and leakage.

1. ASME valves made from cast iron; A126 may not be used for lethal or flammable service.
2. Model 215V valves are not suitable for positive pressure.

General Application

Model 215V is suitable for the protection of high volume vacuum pumps, conveying systems and light gauge tanks. Model 337 for the protection of low to medium pressure high volume blowers, compressors, conveying systems and bulk hauling trailers/equipment.

Technical Data

Connections: Threaded NPT or BSPT
Temperature range: -20° to 406°F (-29° to 208°C)
Vacuum range (Type 215V): 2″ to 29″ Hg (67.7 to 982 mbarg)
Pressure range (Type 337): 1 to 60 psig (0.07 to 4.1 barg)
Codes Type 215V: PED
Type 337: ASME VIII and PED