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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

LEA Series Flame Arresters

Features & Benefits
  • Suitable for in-line deflagration
  • Exceptional flow capacities with minimal pressure drop
  • Short-time burn capability
  • Eccentric design, Bi-directional protection
  • Elevated operating temperature models available
  • Elevated operating pressure models available
  • Easy-clean, replaceable, crimped-ribbon elements
  • Sizes and materials to suit a wide range of applications
  • End connections include flanged or threaded options
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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® LEA Series of In-Line Deflagration Flame Arresters are designed to prevent the propagation of flames in piping systems. By locating the flame arrester in close proximity to the potential source of ignition, any flame or explosion is confined to the immediate area. LEA flame arrester models include high pressure, high temperature and short-time burn variants.

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 flame arrester and into the protected line. In the event that a flame stabilises on the flame arrester element, a sudden increase in temperature will be detected by a monitoring system and secondary protection measures are activated to stop the flow of the flammable mixture.

Explosion Groups

Elmac LEA Series of In-Line Flame Arresters are ATEX certified for Explosion Groups IIA1 & IIA.

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

LEA Series Flame Arresters drawing

LEA Series - Dimensions & Operating Limits

 Maximum operating pressure (bar(a))Maximum operating temperature(°C)Size NB (mm)
15 - 2025 - 3240506580100125150200250300350400
Overall length
A (mm)
1.20+60317337317323401413457591577903122112399801090
1.45+609901100
+16032734732733341142346760158791312311249
1.50+6032734732733341142346760158791312311249
1.60+60327347327333411423467
Diameter
ØD (mm)
2292292292292542793434834835976988139281062
Centre to top of temperature probe(short-time burn models)
(mm)
325320320315325355390470470525600680755815
Approx Wt (kg)23242325324164120123216311417650870
The LEA series flame arresters are short-time burn rated for protection against stabilised burning. Please contact Elmac with details of your requirement.

LEA Series - Options & Variations

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
Sensors (short-time burn option)Installed on one side (uni-directional) or both sides of element (bi-directional)Thermowell to protect sensor from process
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