KnitMesh - Deflagration Flame Arrestors, Detonation Flame Arrestors, Microbore Flame Arrestors and Light Duty Flame Arrestors from Elmac Engineering

Elmac Engineering provide a broad flame arrestor product range so that the best flame arrestor characteristics can be offered for any particular duty. Elmac consider the nature of the application, before offering an appropriate solution. With each solution provided the various challenges facing the flame arrestor will have been carefully evaluated. The challenges posed can take many forms, the type of gas, prevailing operating conditions and the equipment in which the flame arrestor is being used. Elmac flame arrestors range from robust, cost effective gauze deflagration flame arrestors through to high performance crimped ribbon detonation flame arrestors. Elmac flame arrestors are offered with full accreditation to recent mandatory ATEX legislation covering the use of equipment in potentially explosive environments.

ELMAC FLAME ARRESTOR PRODUCT RANGE

ELMAC flame arrestors are designed to achieve the most favourable balance between flame quenching of the flammable gas or vapour and effective process flow at the lowest resistance or pressure drop. They are robustly constructed to resist the pressure waves that accompany flame fronts and will withstand cleaning or immersion in strong solvents. The Elmac flame arrestor range includes:

• In-line and end of line deflagration flame arrestors
• In-line detonation flame arrestors
• Microbore flame arrestors
• Light duty flame arrestors
• Flame arrestors suitable for application in gas groups IIA, IIB and IIC
• Flame tested in accordance with BS7244:1990 and BS EN 12874:2001

DEFLAGRATION ARRESTORS

Available for both end of line and in-line applications, for situations where the arrestor can be kept close to the source of ignition to minimise flame speed and explosion pressure, the ELMAC SGE and FE ranges use well-established gauze laminate construction for cost effective protection of plant and equipment.

DETONATION ARRESTORS

ELMAC in-line detonation flame arrestors are designed to be installed in a pipeline where there is a significant distance between the arrestor and the potential source of ignition, or where the pipe is not straight and smooth, and there may be roughness, obstructions, bends, junctions or changes in section in the intervening pipework. Generally speaking there are no safety restrictions on installation conditions.

Both stable and overdriven detonations can be extinguished and extensive flame testing under such conditions has been carried out on ELMAC in-line detonation flame arrestors.

There are numerous applications, usually involving situations where it is not feasible to locate an in-line deflagration flame arrestor sufficiently close to the potential source of ignition. Actual sources of ignition such as gas burner blow back and fan or pump problems in a vapour line will be very similar to those encountered where an in-line deflagration flame arrestor is specified but the pipeline conditions and the location of an in-line detonation flame arrestor do not need to be as tightly controlled as they would be for an in-line deflagration flame arrestor.

Both detonation and deflagration arrestors are available in either carbon steel or stainless steel and are flanged ANSI B16.5 Class150 LB RF as standard although other flange or threaded connections are available, usually at no extra cost.

With over 70 years combined experience in the flame arrestor market, it is not surprising that most major industrial companies feature among our references. Our customers include companies in a broad spectrum of industry sectors:

• Oil, gas and petrochemicals
• Mining
• Pharmaceuticals
• Power generation
• Agro-chemicals and fertilisers
• Food, flavours and fragrance
• Waste treatment
• Equipment manufacturers

Typical applications include:

• Flare stacks
• Flammable liquid storage tank vents
• Feeds to burners
• Isolation of rotating equipment
• Flammable liquid emptying and filling systems
• Engine protection systems for hazardous environments
• Chemical and petrochemical process plant
• Coal mine ventilation systems
• Sewage digester plant
• Gas pressure regulators
• Gas analysis instrumentation

See also:

Chemicals Technology - Knitmesh - Mist Elimination, Coalescers and Mass Transfer Separation Equipment