Types

Two basic types of arresters are:

Deflagration arresters - they hinder the progress of deflagration (which is the expansion of the flame by subsonic speed without any significant ensuing shockwave).

Detonation arresters - they hinder the progress of detonation (which is an explosion spreading by supersonic speed, complemented by a significant ensuing shockwave). These types are mounted into the piping where they prevent the spreading of the flame during detonation. They are meant to anchor detonations.

Deflagration arresters:
• deflagration end-of-line, i.e. types J 373, J 374
• deflagration valve end-of-line (for vapour recovery), i.e. types J 341, J 344

Detonation arresters:
• bi-directional detonation in-line, i.e. types J 131, J 134
• unidirectional detonation angular, i.e. type J 474 (they work in one-way as detonation arresters but in the opposite direction, they work as deflagration ones)