END-OF-LINE FLAME ARRESTER
EF500DTEL
- 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
The EF500DTEL is an end-of-line flame arrester configuration intended for detonation protection according to its applicable certified design. Because end-of-line and detonation terminology describes a specific protection configuration, selection should be based on the actual installation and certification applicable to the selected EF500DTEL.
The EF500DFEL is intended for end-of-line deflagration protection, while the EF500DTEL represents an end-of-line configuration intended for a different and more severe explosion-protection scenario. The products should not be treated as interchangeable. The applicable model must be selected from the installation, gas group and required protection defined for the project.
It can be evaluated for biogas, biomethane or other combustible-gas applications when the required protection scenario corresponds to the certified EF500DTEL configuration. The gas name alone is not sufficient to select the device. Gas composition, explosion group, installation arrangement, pressure and temperature must be reviewed.
It can be evaluated for applications involving biogas or sewage gas where the plant's explosion-protection concept identifies an appropriate end-of-line detonation-protection requirement. The actual need and installation position must be determined from the specific plant arrangement.
ABOUT EF500DTEL
The end-of-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.
Installed at the outlet of vents or open discharge points, 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 end-of-line detonation flame arrester can be applied in a wide variety of industrial installations handling flammable gases or vapours, where compliant explosion protection at the tank or vent outlet is required.
Frequently Asked Questions
The EF500DTEL is an end-of-line flame arrester configuration intended for detonation protection according to its applicable certified design. Because end-of-line and detonation terminology describes a specific protection configuration, selection should be based on the actual installation and certification applicable to the selected EF500DTEL.
The EF500DFEL is intended for end-of-line deflagration protection, while the EF500DTEL represents an end-of-line configuration intended for a different and more severe explosion-protection scenario. The products should not be treated as interchangeable. The applicable model must be selected from the installation, gas group and required protection defined for the project.
It can be evaluated for biogas, biomethane or other combustible-gas applications when the required protection scenario corresponds to the certified EF500DTEL configuration. The gas name alone is not sufficient to select the device. Gas composition, explosion group, installation arrangement, pressure and temperature must be reviewed.
It can be evaluated for applications involving biogas or sewage gas where the plant's explosion-protection concept identifies an appropriate end-of-line detonation-protection requirement. The actual need and installation position must be determined from the specific plant arrangement.
The explosion group must be selected according to the actual gas or vapour composition and the applicable classification for the installation. Biogas composition can vary, so the group should not be assumed only from the application name.
MESG, or Maximum Experimental Safe Gap, is associated with the flame-transmission properties of flammable gases and vapours and is used in explosion-group classification. It is therefore an important input when determining the appropriate flame-arrester configuration.
Yes. Any flame-arresting element introduces resistance to gas or vapour flow. Pressure drop should therefore be considered together with required flow and operating conditions when selecting the device.
For end-of-line devices installed outdoors, protection against rain, dirt, foreign objects or birds can be an important installation consideration. Protective hoods or screens can be evaluated where compatible with the selected EF500DTEL configuration. The exact accessory arrangement must be confirmed for the particular device and project and should never be added in a way that affects its certified flame-arresting function.
Yes. Condensate, contamination or deposits can affect the condition and available flow area of a flame-arresting element. The nature of the gas stream and the environmental exposure of the installation should therefore be considered when defining inspection and maintenance requirements.
Normally required information includes: gas or vapour; gas composition; required explosion group; flow requirement; operating and design pressure; operating and design temperature; connection size and type; installation arrangement; required explosion-protection scenario; and applicable project specifications. The selected configuration should always be checked against its applicable certification.
Delivery time depends on size, material, explosion group, configuration, quantity and project requirements. The applicable delivery time is confirmed with each quotation. Logistics and international delivery can be coordinated according to the agreed supply scope.
Specific inspection requirements should be defined during the RFQ stage so that their scope can be evaluated and agreed.
Yes. The EF500DTEL can be considered for EPC and project-managed supplies where defined technical, quality, inspection and documentation requirements apply. Project-specific requirements should be established during quotation.
The documentation package depends on the selected device, applicable certification and agreed project scope. Applicable technical, material, inspection and test documentation can be defined during quotation. Any additional certification, traceability or project-documentation requirements should be stated at RFQ stage.