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Flame Arresters

In-Line Deflagration Flame Arresters

In-Line Deflagration Flame Arresters Elmac’s series of In-Line Deflagration Flame Arresters are designed to prevent the propagation of flames in piping systems. By locating the arrester in close proximity to the potential source of ignition, any flame or explosion is confined to the immediate area. LCA Flame Arresters have multiple operating capabilities including high pressure, high temperature, and short time burn.
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Description

Flame arresters are at times mounted directly upstream of pressure / vacuum relief vents, or are connected to short runs of open vent outlet piping. These devices, known as “Vent-Line / In-Line” Deflagration Flame Arresters are designed with flanged or threaded mounting connections on both the inlet and the outlet. It is possible for a flammable vapor/air mixture to ignite within the confined space of the short outlet pipe or within the vent body.

Such an ignition is referred to as a confined deflagration, that is, a flame front moving in a confined space (e.g. constrained by pipe walls) at a speed less than the speed of sound. The Vent-Line / In-Line Deflagration Flame Arrester is designed to stop this type of flame front. Note: these arresters have very specific limitations as to where they can be properly located within a piping system.