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SGE-IB Series Flame Arresters

Features & Benefits
  • Suitable for in-line deflagration
  • Exceptional flow capacities with minimal pressure drop
  • Bi-directional protection
  • Elevated operating temperature models available
  • Elevated operating pressure models available
  • Sizes and materials to suit a wide range of applications
  • End connections include flanged or threaded options
  • Available with concentric or eccentric body design
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Principles of Operation

The Elmac Technologies® SGE-IB In-Line Deflagration Flame Arresters are designed to prevent propagation of flames in gas or vapour mixtures. By locating the arrester in close proximity to the potential source of ignition, any flame or explosion is confined to the immediate area. SGE-IB Deflagration arresters are supplied as complete units ready for simple and direct installation into piping systems. In the context of the Pressure Equipment Directive (PED), Elmac flame arresters are classified as a piping assembly.

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 therefore contained or extinguished.

Explosion Groups

Elmac SGE-IB Series of In-line Flame Arresters are ATEX certified for Explosion Groups IIB1, IIB2 & IIB3.

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)Maximum operating pressure (bar(a))Maximum operating temperature (°C)1520253240506580100125150200250300350400
Overall length
A (mm)

ØD (mm)
Approx Wt (kg)9101116182329385586108196374442540690
FeatureStandard FittingOptions*
Arrester Housing 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
*May be limited according to arrester model size.
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