A flame arrester functions by absorbing the heat from a flame front traveling at subsonic velocities, thus dropping the burning gas/air mixture below its auto-ignition temperature; consequently, the flame cannot survive. The heat is absorbed through channels (passages) designed into an element. These channels are chosen and measured as the MESG (maximum experimental safe gap) of the gas for a particular installation On a fuel storage vent, flame arresters also serve a secondary purpose of allowing air pressure to equalize inside the tank when fuel is added or removed, while also preventing insects from flying or crawling into the vent piping and fouling the fuel in the tanks and pipes.
In-line / End-line type & also Detonation type is available.

• Bi-directional flame transmission proof design
• Lowest pressure drop results in low operating and life cycle costs
• Protects with deflagrations for explosion groups IIA & IIB (NEC groups D & C)
• Optimized flow capacity
• Easier cleaning