Belgas Type F289 Pilot-Operated Back-Pressure Regulator

The Belgas F289 is a pilot-operated back-pressure gas regulator that operates as a high-flow relief valve with an adjustable setpoint. Use the Type F289 instead of a standard relief valve to protect against over-pressurization in the downstream system.

Belgas F289 Pilot-Operated Back Pressure Regulator

The pilot regulator allows accurate back-pressure control with minimal buildup over the set pressure for the main valve’s full opening. The F289 serves in applications of fuel gas relief and gas gathering relief.

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Features & Benefits

Belgas F289 Features

  • Throttling Type Relief
  • High Flow Rates
  • Compact
  • Reliability Due to Simplicity
  • Tight Shutoff

Port Sizes & Connections

  • 3/4”
  • 1” NPT
  • 2” NPT

Pressure Ranges

  • 14” WC up to 100PSIG
  • Five spring ranges


  • Aluminum, Iron

Products Variations


Regulator Applications

  • Fuel Gas Relief
  • Gas Gathering Relief
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