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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

ESA Series Flame Arresters

Features & Benefits
  • Short-time burn rated for protection from stabilised burning events
  • Extended upper operating temperature limit
  • Exceptional flow capacities with minimal pressure drop
  • Easy-clean, replaceable, crimped-ribbon elements
  • Unique element design is less susceptible to fouling/clogging
  • Light-weight 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

Elmac Technologies® ESA Series of 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. This provides protection against atmospheric deflagrations and short-time burn events.

In the event that a flame stabilises on the arrester element, the sudden increase in temperature would be detected by a control/monitoring system. In these circumstances secondary protection measures such as the purging with inert gases, or the activation of shut-off valves, would be implemented. For a deflagration with no stabilised flame, 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.

The ESA Series incorporates Elmac’s E-Flow™ crimped ribbon technology in the flame arresting element. The metal matrix of the element has been optimised, using Computational Fluid Dynamics, to ensure industry-leading flow and pressure drop characteristics.

Explosion Groups

Elmac ESA Series of End-of-Line Arresters are ATEX certified for gas explosion groups IIA1 & IIA 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

Technical Specifications

Size NB (mm)1520253240506580100125150200250300350400450500600
Diameter ØA (mm)24524524524524524530030036042050050060066079087095010301200
Overall Height B max (mm)390395395395400390425425440475520520690725540545585600655
Minimum clearance C min (mm)270270270270270270270270270270290290290290290290340340380
Approx Wt (kg)7.37.57.88.18.58.914.815.520.526.841.546.379.9103.5114.2135.2157.6182.3230.3
*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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