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Gaznet
Type-4 hydrogen storage cylinders in production

Hydrogen storage

Type-IV high-pressure vessels for hydrogen, CNG, and biogas storage — type-approved per EN 12245, ADR, and TPED.

The product

High-pressure vessels engineered for hydrogen storage parks

Gaznet supplies type-IV high-pressure vessels for hydrogen, CNG, and biogas storage. Each vessel uses a plastic liner with stainless steel end bosses and a composite outer wrap of high-strength, lightweight fibreglass and epoxy resin. The construction delivers the highest safety levels for high-pressure storage and transport of large hydrogen volumes — at a competitive price per kg of hydrogen stored.

Vessels are type-approved per EN 12245, ADR, and TPED. Compared to steel skids of equivalent capacity, type-IV pressure vessels deliver up to 70% weight reduction.

Technical downloads

Download the original product brochure for drawings, photos, and full catalogue context.

Specifications

Pressure rating

up to 450 bar

Volume per vessel

1,666–2,500 L

Container capacity

up to 42,350 WV

Safety factor

≥ 3.0

Temperature range

−40 °C / +65 °C

Certifications

EN 12245-3 / ADR / TPED / PED

Customised manifold solutions available on request.

Hydrogen storage configurations
Technical characteristics Unit 20 ft ISO standard 20 ft ISO high cube 40 ft ISO standard 40 ft ISO high cube 45 ft ISO standard 45 ft ISO high cube
Number of cylinders # 9 11 (9*) 18 22 (18*) 18 22 (18*)
Cylinder volume L 1 666 1 666 1 666 1 666 1 925 1 925
Total storage volume (wc) L 15 000 18 333 30 000 36 666 34 650 42 350
Storage capacity (Wp 250 bar) kg 278 339 555 678 641 783
Storage capacity (Wp 300 bar) kg 323 394 645 788 745 911
Storage capacity (Wp 350 bar) kg 360 na 720 na 831 na
Storage capacity (Wp 425 bar)* kg na 438* na 877* na 1 013*
Height mm 2590 2894 2590 2894 2590 2894

Catalog values are a starting point; final storage layout and manifold configuration are confirmed per project.

Why fibreglass over steel or carbon fibre

Fibreglass pressure vessels combine non-corrosive properties (no galvanic oxidisation risk), excellent fatigue durability, wide temperature tolerance, long design life, and enhanced safety. Together those properties consistently challenge — and beat — steel and carbon-fibre alternatives on lifecycle cost.

Built for ADR transport

Our CNG and biomethane transport containers are fully ADR-compliant and built to the Pressure Equipment Directive. Even in the harshest conditions — salt, moisture, extreme weather — the vessels keep their certified safety margin. Minimal maintenance, decades of service.

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