IN-LINE FLAME ARRESTER
EF500DTIL
- Flame transmission prevention
- ATEX certified for gas explosion groups
- Minimal pressure drop under normal flow
Applications
Configured Service Scope
ATEX / Hazardous Area
Chemical
Gas
Petrochemical
Key Specifications
Nominal Sizes½” to 6” / DN 15 to DN150
Flame propagationDetonation
Explosion groupIIA / IIB1 / IIB2 / IIB3 / IIB / IIC
CertificationsATEX / PED-CE
Related Articles
From Technical Blog
How to Select the Right Flame Arrester for End-of-Line and In-Line ProtectionEFSVALVES at Expoquimia 2023, Barcelona
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FAQs
An in-line detonation flame arrester is installed within a piping system where protection is required against flame propagation associated with a detonation scenario. It is used to help prevent flame transmission toward protected equipment when the identified explosion conditions require detonation rather than only deflagration protection.
Yes. Detonation flame arresters can form part of the explosion-protection concept in biogas, biomethane and sewage-gas piping systems when the identified installation scenario requires this level of protection. The correct configuration must be selected from the actual gas composition, explosion group, pressure, temperature and piping arrangement.
In biogas and wastewater-treatment installations, detonation flame arresters may be considered in gas manifolds and piping between digesters, gas-treatment equipment, gas storage and potential ignition sources. Their actual location depends on the plant-specific explosion-protection concept. The device should therefore be selected from the complete piping and process arrangement.
In confined piping, combustion behaviour can change as a flame propagates through the system. Pipe length, geometry, restrictions and other installation factors can influence flame acceleration. Consequently, an in-line deflagration arrester should not automatically be assumed suitable for every piping arrangement. Where a detonation scenario is credible, an appropriately certified detonation arrester may be required.
ABOUT EF500DTIL
The in-line detonation flame arrester is a safety device designed to protect tanks, vessels and vent systems by preventing flame propagation into the installation during atmospheric detonation events.
The flame arrester stops the flame front by dissipating heat through its internal flame arresting element, quenching combustion and preventing external ignition sources from entering the protected system under defined operating conditions.
The device is available in a range of nominal sizes and explosion groups, in accordance with ATEX requirements. Depending on the selected configuration, the in-line detonation flame arrester can be applied in a wide variety of industrial installations handling flammable gases or vapours, where compliant explosion protection in vent and piping systems is required.
Frequently Asked Questions
An in-line detonation flame arrester is installed within a piping system where protection is required against flame propagation associated with a detonation scenario. It is used to help prevent flame transmission toward protected equipment when the identified explosion conditions require detonation rather than only deflagration protection.
Yes. Detonation flame arresters can form part of the explosion-protection concept in biogas, biomethane and sewage-gas piping systems when the identified installation scenario requires this level of protection. The correct configuration must be selected from the actual gas composition, explosion group, pressure, temperature and piping arrangement.
In biogas and wastewater-treatment installations, detonation flame arresters may be considered in gas manifolds and piping between digesters, gas-treatment equipment, gas storage and potential ignition sources. Their actual location depends on the plant-specific explosion-protection concept. The device should therefore be selected from the complete piping and process arrangement.
In confined piping, combustion behaviour can change as a flame propagates through the system. Pipe length, geometry, restrictions and other installation factors can influence flame acceleration. Consequently, an in-line deflagration arrester should not automatically be assumed suitable for every piping arrangement. Where a detonation scenario is credible, an appropriately certified detonation arrester may be required.
The EF500DFIL is intended for in-line deflagration protection, while the EF500DTIL is intended for applications requiring in-line detonation protection. The correct choice depends on the identified explosion scenario, gas group, ignition location, piping geometry and operating conditions. It should not be selected only from pipe size or service name.
A detonation flame arrester can be considered in piping connected to potential ignition sources such as flares, burners, gas engines or CHP equipment where the installation analysis requires detonation protection. The actual device selection should be based on the piping arrangement and applicable protection requirements.
The required explosion group must be determined from the actual gas composition and project classification. Methane is normally the principal combustible component of biomethane and an important component of biogas, but composition should still be confirmed rather than assumed.
MESG, or Maximum Experimental Safe Gap, is a parameter associated with the flame-transmission characteristics of a flammable gas or vapour. It is used in explosion-group classification and is therefore relevant when determining the appropriate flame-arrester configuration.
Condensate, contamination and deposits can affect the flow path and condition of a flame-arresting element. This is particularly important in wet biogas and sewage-gas systems. The installation should therefore consider the characteristics of the gas stream and appropriate inspection and maintenance requirements.
Any in-line flame arrester introduces resistance to flow through its flame-arresting element. Pressure drop should be considered together with gas flow, operating pressure and system requirements. Actual performance should be evaluated for the selected device and operating conditions.
Normally required information includes: gas or vapour; gas composition; required explosion group; flow rate; operating and design pressure; operating and design temperature; pipe size and connections; possible ignition location; piping arrangement; and applicable project specifications. Where the explosion scenario is not already defined, sufficient installation information should be provided to avoid selecting a deflagration or detonation device only from the service description.
Delivery time depends on size, material, explosion group, configuration, quantity and project requirements. The applicable delivery time is confirmed for each quotation. Logistics and international delivery can be coordinated according to the agreed supply scope.
Specific customer or third-party inspection requirements should be identified during quotation so that their scope can be evaluated and agreed.
Yes. The EF500DTIL can be considered within EPC and project-managed supplies where defined engineering, quality, inspection and documentation requirements apply. Project requirements should preferably be established at RFQ stage.
The documentation package depends on the selected device and agreed project requirements. Applicable technical, material, inspection and test documentation can be defined as part of the project supply. Any specific certification, traceability or additional documentation requirements should be identified during the RFQ stage.