Kunkle Model 338 blower relief valve

a non-code blower relief valve for air service, providing modulated lift and reseat action
Model 338 Blower Relief Valve


  • large nozzle design provides high capacity.
  • Soft seat design for optimum shutoff.
  • lightweight construction.
  • valve modulates specifically for bulk transportation blower applications.
  • Hard coat anodized aluminum bonnet for corrosion protection.
  • Tamper-resistant cap protects factory setting.
  • Tested and inspected for pressure setting and leakage.

General Application

Model 338 is suitable for the protection of low to medium pressure, high volume blowers and for use on bulk hauling trailers and equipment.

Technical Data

Connections: Threaded NPT
Temperature range: -30°f to 400°f (-34°C to 204°C)
Pressure range: 5 to 30 psig (0.34 to 2.07 barg)