Temuco, Chili

  • Gas holder with double membrane and variable gas volume.
  • Standard suitable for use up to +15.0 mbar. Higher pressures possible on request.
  • Suitable for all wind and snow zones | Approved in all European countries.
  • With a Flexxovalve over- / underpressure valve for safe gas storage.


gas holder | gas storage

The Flexxosphere gas holder is designed to store gas generated from organic waste in a wastewater treatment plant or biogas plant. This gas holder is designed to ensure a maximum lifespan in all kinds of circumstances and is therefore extremely durable for our customers. We realise this by choosing the best materials, the application of tested components and by certified production and assembly. The Flexxosphere can withstand a standard pressure between 0 mbar and +15.0 mbar and can withstand a temporary pressure of +20.0 mbar. Higher pressures are possible on request.

Two Flexxosphere's next to each other in use for gas storage

why the flexxosphere and not a regular gas holder?

  • ArtboardCreated with Sketch. Quality is guaranteed by design, production and in-house assembly under KIWA K73883 and ISO-9001.
  • ArtboardCreated with Sketch. The high quality 900 gr/m² PVC foil that is used is extremely stable and produced by a West European supplier. Other foils are possible if requested.
  • ArtboardCreated with Sketch. The Flexxosphere is standard suitable for pressures from 0 to +15.0 mbar and can handle emergency pressures from +20.0 mbar. Higher pressures are available on request.
  • ArtboardCreated with Sketch. For each gas holder you get an extensive report in which all strength calculations and conditions are described.
  • ArtboardCreated with Sketch. Our foil suppliers give a five year guarantee on the material and we give a five year guarantee on the design and processing.


We have the entire chain of sales, R&D, project engineering, production and assembly in-house. This enables us to guarantee you the best quality at the best price.

Your wishes are most important to us. Our experts use our basic design to engineer your project. This ensures an optimal design at the lowest possible investment.

In addition to our sales experts, we also employ mechanical and chemical engineers and textile experts, as well as highly trained professionals in production, assembly and administration to provide you with the best advice.

Every project is customer specific. This keeps us sharp and that results in the very best gas holder for you!

We have been innovating in technical textiles products for decades. We know the market and its possibilities like no other and we cannot wait to share this this knowledge with you.

specifications flexxosphere

  • Very suitable for gases such as biogas.
  • Standard foil: polyester fabric with 2-sided PVC; 4.200/4.000 N/5 cm (900 g/m²) or 1150 gr/m² with 5.600/5.400 N/5 cm. Stronger foils possible if desired or needed.
  • With a Flexxovalve over- / underpressure valve for safe gas storage.
  • Standard suitable for use up to a pressure of +15.0 mbar and for short periods up to +20.0 mbar.
  • Gas permeability standard < 450 l/bar.dag.m², optional < 250 l/bar.dag.m²
  • Suitable for all European wind and snow zones.
  • Delivery includes required static calculations.

Any questions?

Would you like more information? Feel free to contact Yeliz:

wondering what our Flexxosphere looks like in cross section?

Flexxosphere overview schematic translation Englisch

As you can see, the Flexxosphere consists of two membranes. The outer membrane retains its beautiful stable shape due to the operation of the fan. Because of the convex shape, the gas inside is well protected against external influences such as snow and wind. The inner membrane protects the variable gas storage. The over- / underpressure valve ensures safe operation.

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