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Double-Membrane Gas Holders

Our wide range of flexible membrane biogas storage vessels provide options for all biogas systems and project objectives.

IEC OFFERS THE BEST SOLUTION FOR BIOGAS STORAGE: DOUBLE-MEMBRANE GAS HOLDERS


Our gas holders can be free-standing or installed on tanks. These biogas storage systems are suitable for raw or refined biogas, carbon-dioxide (CO²), methane (CH 4) and other gases. Providing a static load analysis is standard with every project. Our double-memebrane biogas storage vessels can store a wide range of volumes to meet your needs.

Multiple Designs Available


Free-Standing Biogas Storage

A free-standing biogas storage system, is a gas holder that is mounted on a concrete pad rather than on top of a tank. These gas holders are available in multiple configurations, including half-sphere and three-quarter spherical forms, to accommodate different space requirements and storage needs. Continuously operated blowers ensure the required operating pressure is maintained, allowing the system to function reliable and efficiently.

Advantages & Options


  • Wide range of storage capacity
  • Volume & Pressure Sensors
  • Operating Pressures set to meet project requirements
  • Installation by experienced and qualified IEC crews

Easy Access Service Box


The innovative design of the service box enables all connections to be above ground and easy to service. The blower, control unit and sensors are easily accessible during operation. The service box is constructed from 316 stainless steel, providing long-term service and trouble-free operation.

High Quality Materials


The production method is ISO-certified and carried out by experienced technicians, so every component is guaranteed to be of the highest quality. Our double-membrane gas holders are made from the highest quality materials and chemically-resistant membranes in the industry. The welded seams are created using high-frequency or thermal technology, depending on the membrane type, ensuring long-lasting durability and performance.
We pride ourselves on providing the highest quality products and services available on the market. Our biogas storage vessels, gas holders, and covers are constructed from the most advanced membrane formulations and equipment available. Our fabrication protocols ensure we deliver the highest quality storage systems with unmatched service from our highly specialized team.

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