Light duty end-of-line flame arrestor (also known as safety vent) with zinc alloy pressure die-cast housing, stainless steel 316 arrestor element and aluminium weather hood, suitable for purging and venting LPG and natural gas lines only. Not for use with hydrogen or refrigeration gases. Designed to prevent flashback and to contain or extinguish a flame where the gas being purged or vented could be accidentally ignited. They are essential safety equipment for the protection of plant and personnel from risk of fire and explosion. Tested to BS 7244:1990 and BS EN 12874:2001.