Application
The Elmac Technologies® AVA series 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.

Principle of Operation
A flame arrester uses an element with small apertures which allows gas or vapour to pass. If the apertures are smaller than the maximum experimental safe gap (MESG) for the gas or vapour then a flame cannot pass through the arrester, and is subsequently contained or extinguished.

Benefits

• Large variety of sizes and materials to suit a wide range of applications
• Variants available for different operating temperature ranges
• Options available for sour environments
• Optional weatherhood
• Replaceable elements
• The Elmac technical team can advise on specific location queries

Gas Groups
Elmac flame arresters in the AVA range are for use with gases in Groups I and IIA.