Sulfur Hexafluoride (SF6) Recovery

Sulfur hexafluoride, SF6, is used around the world as a dielectric medium for high-voltage circuit breakers, switchgear, and other electrical equipment. Additionally, it is used for the filling of insulated windows and for the casting of magnesium. SF6 is expensive and is also a powerful green house gas (20,000 times more potent than CO2). GENERON® membranes allow SF6 to be retained at high pressure (close to feed pressure) while permeating out the unwanted air.

GENERON‘s® SF6 Recovery systems help cut the SF6 emissions by > 90% with a projected payback time of less than a year (for most applications). The customized SF6 Recovery Systems® are manufactured in our ISO 9000 Certified facility in Houston, TX, while the membrane® is fabricated in our Pittsburg, CA facility. GENERON works directly with the client to provide the most efficient and cost effective solution. Contact one of our engineering professionals at +1.713.937.5200 or using our online form.

The GENERON® Advantage

  • Extensive Experience – custom designed skids
  • State-of-the-art Membrane – high recoveries
  • Simple Solution – no moving parts, minimal maintenance
  • Engineering support from concept to completion
  • Remote Operation – Minimal attention required, fully automated systems
  • Minimal Losses – low H losses
  • No Chemicals – environmentally friendly
  • Small Footprint – easily meet footprint requirements


  • Circuit Breakers
  • Electrical switch-gear
  • Magnesium casting
  • Sports Shoes
  • Transformer manufacturing
  • Window thermal insulation

In a typical GENERON® membrane system for SF6 recovery the feed gas is compressed and filtered to remove particles and condensate. A heating step provides an optimum operation temperature for the feed gas to enter the GENERON® membrane filters. SF6 gas permeates extremely “slow” through the membrane walls and remains at pressure. The “faster” permeating gases, e.g. N2, O2, H2O, are removed with the permeate.




  • Feed gas pressures up to 1,000 psig (69 barg)
  • >90% SF6 Recovery
  • <5 vol % SF6 in feed
  • 99.9%-99.999+% with PSA technology
  • Flow rates from 0.5 to 1,000 SCFM


Contact us to inquire about a SF6 Recovery Package.