Biogas Cover – Flexible & Gas-Tight Biogas Storage Solutions by DERFLEX
DERFLEX Biogas Cover systems are engineered for reliable biogas storage, anaerobic digestion, and renewable energy applications. Manufactured using high-strength PVC coated fabrics, our biogas covers provide excellent gas tightness, chemical resistance, and long-term durability for agricultural, industrial, and municipal biogas projects worldwide.
What Is a Biogas Cover?
A biogas cover is a flexible, gas-tight membrane installed on biogas digesters, lagoons, or storage tanks to capture and store biogas generated during anaerobic digestion. Compared with traditional steel gas holders, flexible biogas covers offer superior corrosion resistance, lower installation costs, and higher adaptability to different tank geometries.
DERFLEX biogas covers are manufactured using advanced PVC coating technology, ensuring stable performance in harsh outdoor environments and continuous exposure to methane, hydrogen sulfide, and other biogas components.
Why Choose DERFLEX Biogas Covers?
- Gas-Tight Performance: Excellent air and gas impermeability to prevent methane leakage.
- High Mechanical Strength: Reinforced polyester base fabric ensures dimensional stability.
- Outstanding Weather Resistance: UV, ozone, and temperature resistant for outdoor use.
- Custom Engineering: Designed according to digester size, pressure requirements, and climate.
- Proven Global Projects: Supplied to biogas plants in Europe, America, Asia, and Africa.
Biogas Cover Material Structure
DERFLEX biogas covers are produced from PVC coated industrial fabrics, specifically formulated for long-term biogas exposure.
| Layer | Description |
|---|---|
| Base Fabric | High-tenacity polyester fabric with balanced warp & weft strength |
| PVC Coating | Multi-layer PVC formulation with plasticizers and stabilizers |
| Surface Treatment | UV protection, anti-fungal, anti-chemical additives |
| Optional Layer | Gas barrier or anti-H₂S protection coating |
Technical Specifications
| Parameter | Specification |
|---|---|
| Material | PVC Coated Polyester Fabric |
| Weight | 900 – 1500 g/m² (customizable) |
| Tensile Strength | ≥ 3000 / 3000 N / 5 cm |
| Temperature Resistance | -30°C to +70°C |
| Gas Tightness | Methane & air impermeable |
| Expected Service Life | 10 – 15 years (project dependent) |
Applications of Biogas Covers
- Anaerobic digestion tanks
- Agricultural biogas plants
- Municipal wastewater treatment facilities
- Industrial organic waste digestion systems
- Flexible gas storage domes
Single Membrane & Double Membrane Biogas Covers
DERFLEX offers both single-layer and double-membrane biogas cover solutions. Single membrane covers are ideal for lagoon and low-pressure systems, while double membrane systems provide stable gas pressure control and additional safety for energy generation plants.
Installation & Engineering Support
DERFLEX biogas covers are prefabricated and delivered ready for installation. We provide complete technical documentation, installation drawings, and remote engineering support to ensure safe and efficient installation on site.
Quality Control & Manufacturing Expertise
DERFLEX operates modern coating and welding lines with strict quality control. Each biogas cover undergoes material inspection, welding strength testing, and gas-tightness checks before delivery.
With more than 20+ years of experience in PVC coated fabric manufacturing, DERFLEX is a trusted supplier for renewable energy and environmental protection industries.
Frequently Asked Questions – Biogas Cover
How long does a biogas cover last?
Typically 10–15 years depending on operating conditions and maintenance.
Can DERFLEX biogas covers be customized?
Yes. Size, material thickness, pressure rating, and fittings are fully customizable.
Is the material resistant to H₂S and methane?
Yes. Our PVC formulations are specially designed for biogas environments.
Do you provide installation guidance?
Yes. Technical drawings, manuals, and remote support are available.
Request a Biogas Cover Solution
Looking for a reliable biogas cover manufacturer? Contact DERFLEX today to receive technical consultation, drawings, and a customized quotation.
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