Flammer - Concentric Inline Detonation Flame Arrester

Inline Detonation Flame Arrester : Explanation

Deflagration = Explosion propagating at subsonic velocity

Detonation = Explosion propagating at supersonic velocity and characterized by a shock wave

Inline detonation flame arresters are fitted with two pipe connections, one on each side of the flame arrester. They are designed to prevent transmission of detonation (explosion propagating at supersonic velocity).

Ignited explosive gas mixture will propagate through the pipe in direction to e.g. storage tank. With pipe length the speed of flame will increase. Up to a certain pipe length / pipe inside diameter ratio, the flame propagate changes from subsonic speed (Deflagration) to supersonic speed (Detonation).

The installation position of the inline detonation flame arrester is independent of the distance to the ignition source. Inline detonation flame arresters are also approved as inline deflagration flame arresters.