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AVC Series Flame Arresters

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

Elmac Technologies® AVC Series End-of-Line Deflagration Arresters are designed to be installed at the end of a pipeline or exit vent from a vessel, where the ignition source is external, to provide protection against atmospheric deflagration.

A flame arrester uses an element with small apertures which allows gas or vapour 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 subsequently contained or extinguished.

Explosion Groups

Elmac AVC Series End-of-Line Flame Arresters are ATEX certified for gas explosion groups IIB & IIC at a maximum operating temperature of +60°C. Suitable for Hydrogen Applications.

Standards Compliance

Elmac Flame Arresters are manufactured in accordance with EN ISO 16852 and approved to ATEX Directive 2014/34/EU.

Enviromental Management Quality Management EX CE

Technical Specifications

Size NB (mm)2540506580100125150200250300350400
Diameter ØA (mm)178223255255300370370510510650750800950
Height B (mm)135158177221225262266339341538582724770
Approx Wt (kg)
*Some arresters are available with differently sized elements for enhanced flow capabilities.
FeatureStandard FittingOptions*
Arrester MaterialsCarbon Steel or Stainless SteelLow Temperature Carbon Steel, Duplex Steel, Hastelloy
Element Material316L Stainless SteelHastelloy
ConnectionsANSI 150 FlangePN16 Flange, Female BSP/NPT, Male BSP/NPT
Arrester FinishPainted (Carbon Steel Arresters)Offshore Paint, PTFE Coated, Others on Request
Bird Screen316 Stainless Steel304 Stainless Steel, PTFE Coated
*May be limited according to arrester model size.
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