Kunkle Bronze Vacuum Relief Valve Model 215V (Non-Code Vacuum) & Kunkle Bronze Safety Valve Model 337 – Certified Valve

Models 215V and 337 feature a large nozzle design for high capacity applications. Model 337 is certified for air and gas. Both valves are certified for non-hazardous gas. Used with low to medium pressure high-volume blowers, compressors and pneumatic conveying systems. Also used to regulate bulk hauling trailers and bulk hauling equipment, and light gauge tanks.

Model Descriptions:

  • Model 215V is Non-code Vacuum Relief Valve.
  • Model 337 is ASME Section VIII Air/Gas “UV” National Board Certified Safety Valve. The valve has “lift-pin” lift device for easy manual testing.
  • Both models are PED Certified for non-hazardous gas.

Adjustments are factory sealed to help prevent tampering or disassembly.


  • 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 preopen or simmer.
  • Pivot between disc and spring corrects misalignment and compensates for spring side thrust.
  • Each Kunkle valve is tested and inspected for pressure setting and leakage.


  • Protection of low-to-medium pressure high-volume blowers, compressors and pneumatic conveying systems.
  • Bulk hauling trailers/equipment.
  • Light gauge tanks.
  • Protection of high-volume vacuum pumps and conveying systems.

Vacuum Limits:

  • Model 215V
    • 2″ Hg to 29″ Hg [67.7 to 982 mbarg]
    • -20° to 406°F [-29° to 208°C]

Pressure and Temperature Limits:

  • Model 337
    • 1 to 60 PSIG [0.07 to 4.1 barg]
    • -20° to 406°F [-29° to 208°C]


  • Variation 03: Stainless steel trim (nozzle and disc).

Please refer to the Kunkle Catalog or Contact Us for additional information.

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