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End Of Line Deflagration Flame Arresters

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End Of Line Deflagration Flame Arresters

Motherwell Tank Protection Deflagration In-Line Flame Arresters are certified compliant with European ATEX and PED directives where applicable.

Motherwell Tank Protection can supply different types of end of line deflagration arresters, suitable for a wide variety of industries and applications. EVA, EVB, and AVC arresters have replaceable elements and are suitable for IIA, IIB3, and IIC gas groups respectively. SV and SVE arresters are small, light-duty arresters with fixed elements, whilst FE-IE arresters are for use with pressure and/or vacuum relief valves.

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, to provide protection against atmospheric deflagration.

We offer a series end-of-line deflagration arresters specifically designed to be used in conjunction with pressure/vacuum relief valves, to prevent propagation of flames in gas or vapour mixtures. These arresters are specifically designed to be located below the inlet of a pressure/vacuum relief valve, thereby providing an extra layer of tank protection.



These end of line units are designed to be used as a venting device for installation at the end of a pipeline or exit vent on a vessel. They allow for an unrestricted flow of gases into the atmosphere and clean air into the tank/pipe therefore preventing possible vacuum conditions whilst ensuring protection to the vessel from any possible atmospheric deflagration.


An ‘end of line’ unit is designed to prevent an unconfined deflagration in the surrounding atmosphere from entering the pipe or system and is not suitable for preventing a flame from within the pipe or system igniting the surrounding area.



                Suitable for pipe sizes from 2” up to 12”

                Available for application in gas groups IIA, IIA1, IIB1, IIB2, IIB3

                Compliant with the European ATEX directive 2014/34/EU and United Kingdom’s UKCA Directive UKSI 2016:1107

                Removable / Replaceable element for easier & cost-effective maintenance

                Tested in accordance with EN ISO 16852:2016

                Sintered mesh flame quenching element for improved deflagration stopping and air flow performance



                Flare stacks


                Flammable liquid storage tank vents

                Waste treatment plants

                Gas pressure regulators

                Not applicable for endurance burning situations

                Maximum Operational Temperature () – 60 °C

                Process Connection drilled to any client specification.

                Vertical Mounted



We aim to provide a rapid response to both technical and commercial enquiries. We are committed to offer competitive pricing and short production lead times and pride ourselves on delivery reliability.



End of Line Flame Arrester

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