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ALES' solutions for high voltage

High voltage

To help this industry reduce its greenhouse gas emissions, the market’s main players have developed alternative insulating gas mixtures, and Air Liquide accompanies them with their distribution. These eco-friendly mixtures and the equipment required to handle them are defining the future of the gas insulated substations (GIS) and gas insulated lines (GIL) market worldwide.

Based on its expertise, Air Liquide has developed a wide range of innovative equipment that enables you to handle these gas mixtures in similar conditions to those of SF6. This broad range of products supports your needs through your gas insulation process.

As an expert in gases, Air Liquide can provide pure gases, gas mixtures, and dielectric gas mixtures in gaseous or liquefied state, in small or large packaging formats.

GIS and GIL manufacturers and end users, power Transmission System Operators (TSO) and high voltage laboratories are now able to use eco-friendly gas mixtures at industrial scale with Air Liquide's innovative range of equipment to distribute them.

Our solutions

Air Liquide’s mobile unit for vaporization range is designed for the gas management of a new generation of eco-friendly dielectric gas mixtures for high voltage applications: GIS and GIL. This product line answers every need throughout the life cycle of your GIS and GIL. You can  fill, recover, or refill high-voltage compartments using pre-mix (gas or liquid) or mixtures prepared on site, from cylinders or containers. Our equipment guarantees you to have the right concentration for your mixture, for indoor or outdoor use, whatever the climatic conditions.


  • Innovative: Patented technology for high-quality gas homogenization and handling high flow gas distribution
  • Eco-friendly gas mixtures distribution
  • Mobile and autonomous
  • Flexible: Available for liquid and pressurized gas sources. Pre-mix can be prepared in our gas packaging centers by our specialists or mixed on site by yourself.