Fenwal Isolation Systems are designed to detect incipient explosions and react instantly to keep the deflagration from spreading to unprotected areas or interconnected equipment.  

The Chemical Type Isolation method discharges an explosion suppressant into the duck work to suppress the fireball and prevent it from reaching other plant areas or equipment.

The Mechanical Type Isolation method produces the same results by triggering the release of a high speed knife valve that forms a mechanical barrier in the pipeline.

Both types of systems are used to help prevent explosions from propagating to unprotected areas. Often combined for detonation containment, these systems are particularly suited to curtailing flame spread in support of explosion vents.