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Technologies
  • E-FLOW™
    E-FLOW™
    Elmac’s E-Flow™ stands for Enhanced-Flow, the technology that’s used in the majority of our End-of-Line and In-Line Flame Arresters. Read More

EHB Series Flame Arresters

Features & Benefits
  • Designed for use in elevated temperature applications
  • Exceptional flow capacities with minimal pressure drop
  • Easy-clean, replaceable, crimped-ribbon elements
  • Unique element design is less susceptible to fouling/clogging
  • Lightweight for ease of installation
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Technologies
  • E-FLOW™
    E-FLOW™
    Elmac’s E-Flow™ stands for Enhanced-Flow, the technology that’s used in the majority of our End-of-Line and In-Line Flame Arresters. Read More

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Principles of Operation

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

The EHB Series incorporates Elmac’s E-Flow™ enhanced crimped ribbon technology in the flame arresting element. The matrix structure has been optimised using Computational Fluid Dynamics (CFD) to ensure industry leading flow and pressure drop characteristics.

During a deflagration, the combustion products are cooled at the element surface by heat dissipation. This prevents continuation of the combustion process through the arrester and into the protected vent line.

Explosion Groups

Elmac EHB Series End-of-Line Arresters are ATEX certified for gas explosion groups IIB1, IIB2 & IIB3 at a maximum operating temperature of +150°C.

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

General Layout

EHB Series Flame Arresters drawing

EHB Series - Dimensions

Size
NB (mm)
1520253240506580100125150200250300350400450500600
Diameter ØA (mm)24524524524524524530030036042050050060066079087095010301200
Height B (mm)192197199200205195230230246279325325492528342350390403461
Approx Wt (kg)7.07.27.57.88.28.614.515.220.226.541.246.079.6103.2113.9134.9157.3182.0230.0
*Some arresters are available with differently sized elements for enhanced flow capabilities.

EHB Series - Variations

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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