Pantograph/Back Pressure/Check Valve 

The pressure control valve shall function to prevent the upstream pressure from falling below a predetermined minimum while closing to prevent reverse flow. The OCV 108-3 has a wide range of applications – anywhere a system must be protected from pressures that are too high (relief) or too low (sustaining) and reverse flow must be prevented. Typical applications include:

  • Pump systems
  • Fuel distribution systems


  • Pressure sustaining – prevents inlet pressure from dropping below a predetermined minimum
  • Automatic closure on pressure reversal
  • Operates over a wide flow range
  • Set pressure is adjustable with single screw
  • Quick opening; adjustable closing speed
  • Can be maintained without removal from the line
  • Factory tested and can be preset to your requirements