Reverse Flow Gas Coalescer

Exterran's Reverse Gas Flow Coalescer is used to remove liquid contaminants and particles greater than 0.3 microns from the natural gas stream.

Key Benefits


  • Help protect your equipment from damage with reliable filtration and particle removal down to as low as 0.3 micron
  • Reduce downtime with our proven pre-engineered design


  • Stock inventory and quicker delivery allow faster startup
  • Latest ASME design and construction standards ensure high performance and safety


  • Added assurance of a warranty on our manufactured products that runs 12 months from startup or 18 months from delivery, whichever comes first
  • Prompt, professional service, support and spare parts from local technicians in or near every major oil & gas producing region in the U.S. and numerous areas around the world

How it Works

The natural gas stream first passes through coalescing elements in an inside to outside flow pattern that captures solid particles and causes liquids to form into larger droplets. The resulting stream is typically free of particles down to 0.3 microns. Captured droplets collect in the bottom section of the vessel and the fluid is eventually discharged to liquid storage by an automatic level control valve.

Standard Features & Options

Standard Features

  • Pressure relief valve
  • Sight glass/level gauge with gauge cocks
  • Liquid level controller and level control valve
  • Pressure indicator
  • Full diameter closure
  • Instrument gas supply
  • Differential pressure indicator assembly


  • Sentry closure
  • Skid mounted
  • Concrete blocks
  • Full installation
  • Sour gas service designed and built to NACE standards