Certified HazLoc In-Line Flame Arrestors

Work with Confidence

Lisk’s ATEX, IECEx and UL/ULC certified series of hazardous location in-line deflagration flame arrestors is designed to exceed your safety and operational performance requirements where flammable gas and vapors are present improving process safety.

Enter your specifications to see which certified flame arrestor is right for you

What is your flow rate (SCFM)?

What is the pressure drop needed for your application (PSI)?

What size is needed?


What type of housing material is preferred?

304 Stainless Steel
A106 Carbon Steel
2024-T6/T651 Aluminum

What type of element is preferred?

316 Stainless Steel
302/304 Stainless Steel

We recommend the following certified flame arrestors for your application. Each one of our certified flame arrestors features a crimped metal ribbon element design and NPT housing connection style for gas groups IIA.

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Our ATEX, IECEx and UL/ULC certified hazardous location in-line deflagration flame arrestors can be utilized in a variety of oil & gas applications for IIA (D) gas group.

  • Ex-Enclosures
  • Piping
  • Storage Tanks
  • Pharmaceutical
  • Gen-Set/Power Gen
  • Petrochemical
  • Refining
  • OnG (Drilling)

Safety and Performance

Our flame arrestor series is manufactured to offer structural durability while minimizing restrictions in the flow path for utmost safety and field performance.


  • Bidirectional design stops a flame from either direction in a piping system
  • Available in stainless steel, carbon steel, and aluminum housing options
  • Available with fixed crimped metal element design
    • Available in 302 & 316 stainless steel element options
  • Available in sizes 1/4″, 1/2″, 3/4″, 1″, 1 1/2″, 2″, 2 1/2″, 3″ and 4″

Certified In-Line Flame Arrestor Request a Quote

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