D-COVER
Freestanding D-COVER gasholders are reliable storage solutions designed for biogas, carbon dioxide, and other industrial gases. The structure consists of two key membranes: an inner (gas) membrane and an outer (weather protection) membrane.
Gas is collected in the space beneath the inner (gas) membrane. To maintain the structure’s shape and stability, air is continuously pumped into the space between the outer and inner membranes by an air blower. A system of valves regulates this air pressure, ensuring the dome’s stability.
Unlike covers installed on existing tanks, D-COVER gasholders are independent structures mounted on their own concrete foundation.
The freestanding D-COVER gasholder is a key engineering solution for any modern biogas plant or industrial facility where stability is a priority. It performs the critical function of a gas storage unit, providing a buffer volume for gas accumulation. This allows for the stabilization of gas flow, guarantees the uninterrupted operation of cogeneration units, optimizes production processes, and, as a result, increases the profitability of your enterprise.
Unlike covers installed on tanks, the D-COVER gasholder is an independent, ground-mounted structure installed on its own concrete foundation. Its stability is maintained by constant air pressure. A dedicated air blower continuously pumps air into the space between the outer and inner membranes, giving the gasholder its characteristic dome shape. This ensures the structure maintains its geometry and exceptional resistance to wind and snow loads, regardless of the gas fill level.
Technologies and Materials for Long-Lasting Service
The reliability of our gasholders is based on High-Frequency (HF) welding technology. This method creates completely sealed, monolithic seams by joining the material at a molecular level. The strength of such a seam often exceeds the strength of the fabric itself, guaranteeing maximum gas tightness and a significantly longer service life compared to products welded with hot air.
For production, we exclusively use premium reinforced technical textile with a PVC coating from the leading European manufacturer Sattler (Austria). This material has the lowest gas permeability on the market and is designed for operation in the harshest conditions: it is resistant to intense UV radiation, the chemical effects of the aggressive environment in biogas plants, and can withstand temperatures from -30 to +70 °C.
COMPONENTS
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Inner membrane (gas)
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Outer membrane (protection)
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Anchor ring for foundation mounting
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Air supply system (blower with valves)
OPTIONS
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Fill level measurement system (ultrasonic sensor)
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Gas overpressure valve
Your Reliable Gas Storage Solution
By choosing the FLEXSOL D-COVER gasholder, you invest in the stability, safety, and efficiency of your technological processes. Our team is ready to provide full technical support, from calculating the optimal volume to developing project documentation.
Ready to start your project? Send us your technical specifications, and our engineers will provide a detailed consultation and prepare a customized commercial proposal that will meet all the needs of your business.
25 countries use FLEXSOL products
for hermetic storage of liquids
and gases
