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Hydrogen (H2) Flame Arresters

Features & Benefits
  • Suitable for end-of-line & in-line deflagration
  • Exceptional flow capacities with minimal pressure drop
  • Bi-directional protection
  • Replaceable elements for ease of maintenance
  • Elevated operating pressure models available
  • Sizes and materials to suit a wide range of Hydrogen applications
  • End connections include flanged or threaded options
  • Lightweight for ease of installation
  • Bird screen fitted as standard

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What is Hydrogen?

Hydrogen (H2) is the most abundant element in the Universe and is present on Earth in great quantities combined with other elements. Hydrogen molecules have useful energy applications but must be separated from these other elements to obtain molecular Hydrogen gas.

There are four categories of process used to generate or separate Hydrogen:

  • Green Hydrogen: typically generated using an electrolyser to split water into Hydrogen and Oxygen.
  • Grey Hydrogen: generated from natural gas or Methane through steam reforming.
  • Blue Hydrogen: generated from steam reforming, which uses steam to separate Hydrogen from natural gas. This process produces GHGs, but carbon capture and storage technologies capture and store these emissions.
  • Brown Hydrogen: generated from brown coal through gasification.
Hydrogen Venting

Regardless of the method used to generate Hydrogen, sufficient venting must be installed to prevent flashback due to ignition by lightening, electric spark or external fire.

Elmac Technologies® has been manufacturing Hydrogen Flame Arresters for over two decades. Our world-renowned Flame Arresters use an element with small apertures that allow gasses or vapours to pass. If the apertures are smaller than the maximum experimental safe gap (MESG) for the gas or vapour, then a flame cannot pass through the arrester and is contained or extinguished.

Our Hydrogen Flame Arresters are type-tested to EN ISO 16852 and approved according to ATEX Directive 2014/34/EU.

Elmac Expertise

Elmac has been manufacturing protection equipment since 1936 and brings enhanced levels of flame and explosion protection to a diverse range of applications.

Elmac offers considerable technical leadership and, utilising a range of testing facilities and Computational Fluid Dynamics (CFD) studies, employs a Research & Development team who are renowned for providing solutions engineered for use in the most challenging of industrial applications.

Hydrogen & Electrolysis Knitted Mesh

Our sister company, KnitMesh Technologies®, manufactures bespoke Electrolysis Mesh for use in Polymer Electrolyte, Proton-Exchange Membranes (PEM), Ion Exchange Membranes (IEM) and alkaline zero-gap electrolyser cell applications.

Their Electrolysis Mesh, which is tailored to individual customer specifications, reduces cell voltage and improves process efficiency. The mesh is highly corrosion resistant and able to withstand demanding temperatures, pressures and the caustic nature of any electrolyte solutions.

  • Tailored to customer specifications
  • Available in Nickel or Titanium
  • Supplied in 0.15mm diameter wire
  • Available in infinite range of widths
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Your Trusted Elmac Service Partner

If you have any questions regarding the installation, maintenance or replacement of Hydrogen Flame Arresters,
then please click here to browse our worldwide network of Service Partners who can assist you with inspections,
maintenance and replacement of parts as required.

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