Maximum Safety: Top Cabinets for Compressed Gas Storage
A person in a lab coat and gloves is adjusting equipment connected to a green gas cylinder, with pressure gauges and valves visible above. A person in a lab coat and gloves is adjusting equipment connected to a green gas cylinder, with pressure gauges and valves visible above.
Storage of compressed gas cylinders
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Safe storage of compressed gas cylinders

Uniform fire protection concept

The SUPREME line safety cabinets for compressed gas cylinders help you give your laboratory continuous fire resistance throughout 90 minutes. In combination with Type 90 DÜPERTHAL safety storage cabinets – compliant with DIN EN 14470-1 – the SUPREME line is the right solution for an end-to-end fire protection concept in accordance with the highest standards.

Type G90 safety storage cabinets – SUPREME line

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Type G90 – 90 minutes’ fire protection

The fire resistance of safety cabinets in accordance with DIN EN 14470-2 is determined by the rise in temperature of the cabinet interior inside a fire chamber, based on the temperature/time curve set out in DIN EN 1363-1. Based on an initial temperature of 20 +/- 5 °C, and depending on the time taken for the surface temperature of the cylinder valve holder to increase by more than 50 Kelvin, the cabinet is classified as Type G15, G30, G60 or G90 (analogous to the time in minutes).

Graph showing temperature variation over time according to DIN EN 14470 standards, with labeled curves for different temperature thresholds. Graph showing temperature variation over time according to DIN EN 14470 standards, with labeled curves for different temperature thresholds.

DIN EN 14470-1 for flammable liquids

  • Max. permissible temperature in the cabinet in accordance with DIN EN 14470-1 = 200 °C (392 °F).
  • Temperature curve according to EN 1363-1 in the fire chamber.
  • Example of rising temperature in a Type 90 cabinet.

DIN EN 14470-2 for compressed gas cylinders

  • Max. permissible temperature on the valve holder surface according to DIN EN 14470-2 = 70 °C (158 °F).
  • Temperature curve according to EN 1363-1 in the fire chamber.
  • Example of rising temperature in a Type G90 cabinet.

Protection objectives and minimum requirements

Safety cabinets for the storage of compressed gas cylinders, in accordance with DIN EN 14470-2, must be designed and constructed in such a way that, in the event of a fire, the contents do not pose any additional risk of fire spreading. The fire resistance should enable personnel to leave the work zone and the fire service to reach the area and contain the fire before the compressed gas cylinders become unstable. In addition, for health and explosion protection, small amounts of gas emissions inside the cabinet must be extracted.


Extracts from DIN EN 14470-2

Ventilation

  • The cabinets must be provided with air inlet and outlet openings to allow connection to an exhaust air system.
  • The exhaust air flow must ensure that small gas emissions inside the cabinet are extracted.
  • For efficient purging, the air exchange rate must be at least 10 times per hour when storing flammable and oxidizing gases, and 120 times per hour when storing toxic gases.
  • Ventilation must be provided in the upper and lower parts of the cabinet.
  • The pressure drop in the cabinet must not exceed 150 Pa.

Gas pipes and electricity lines

  • The number of gas pipes and electric lines shall be limited to the minimum necessary.
  • A maximum of three gas lines with Ø 10 mm and two electric lines with Ø 20 mm are permitted per compressed gas cylinder.
  • For the best possible fire resistance, pipes made of stainless steel or a material with similar thermal conductivity are recommended.
  • Unused penetrations must be closed according to the manufacturer's instructions.

Fire chamber test

  • Each cabinet model is type-tested in a fire chamber in accordance with DIN EN 14470-2 Type G90/Type G30.

Storage capacity

  • The maximum storage capacity per safety cabinet including purge gas is 220 litres: a maximum of four gas cylinders with 50 litres each, or up to three gas cylinders with 70 litres each.
  • The compressed gas cylinders in the cabinet may be in use.

Insertion, removal and fastening

  • An access ramp or mechanical lifting device may be used, but it must not be made of aluminium.
  • A suitable fastening system must be installed in the cabinet to prevent the compressed gas cylinders from falling over.

Extracts from DIN EN 14727 or the new DIN EN 16121 and DIN EN 16122

Static endurance test

  • Standing surfaces, e.g. intermediate shelves, are subject to a static load and an impact test and must not show any signs of breakage or other damage.

Dynamic load test

  • All mechanically moving components, such as doors, are tested with 50,000 cycles each. After the tests, the doors must close and engage precisely.

Included: tested safety at the highest level

Fire safety symbol featuring flames and an open door, indicating an evacuation route.

Type examination according to DIN EN 14470-2 by recognised test institutes (TÜV Süd, ift Rosenheim)

List of DIN EN standards, including 14470-1, 14727, 16121, and 16122.

Classification Type G90/Type G30 according to DIN EN 14470-2. TÜV-tested according to DIN EN 14727 or the new DIN EN 16121 and DIN EN 16122 (laboratory furniture standard).

TÜV Süd and GS logo, indicating product safety certification.

GS mark of conformity.

Certification badge featuring the TÜV SÜD logo, indicating high quality and safety standards.

High-quality mark of approval for superior design, user-friendliness and increased durability.