A flame arrester

 

A flame arrester
is a safety device designed to prevent the spread of flames or explosions in industrial processes where flammable gases or liquids are present. It is typically installed on the opening of a vessel or pipeline that contains flammable material.

The flame arrester works by interrupting the propagation of flame through the vent or pipe opening. It does this by creating a barrier with small openings or channels that are too narrow for the flame to pass through, while allowing the gas or liquid to flow freely. The barrier is typically made of a metal mesh or a plate with holes that are carefully designed to prevent the passage of flames or sparks.

Flame arresters are used in a wide range of industries, including petrochemical, chemical, and pharmaceutical production, as well as in transportation and storage of flammable materials. They are an important safety feature that helps prevent accidents and protect workers and the environment from the devastating effects of explosions or fires.