Flame Arresters Flame arresters are devices fitted to the opening of an enclosure or connecting pipe work and designed to allow flow but prevent flame transmission. They are commonly used to protect tanks and installations from possible risks relating to the transport or storage of flammable liquids and gases. Depending on the application, flame arrester may be installed as a single unit or as part of a system. Flame arresters have no moving parts and consist of a housing and an element suitable for installation in a pipeline, vent lines or process plants. All flame arresters designed and manufactured by KITO consist of layers of wound, corrugated metal ribbons. Their principle depends on heat from the flame as it strives to travel through narrow metal gaps. KITO® flame arresters and valves with integrated flame arresters conform to the Product Directive 2014/34/EU of the European Union and bear the CE mark to indicate their confo.
Explosion Group Different gases react in a distinctive manner and have different flame propagation characteristics. For a simple classification and understanding, they are categorised according to their properties and hazard levels into explosion groups. These explosion groups (or gas group) are defined based on the Maximum Experimental Safety Gap (MESG). The Maximum Experimental Safe Gap (MESG) is expressed in mm and defined as the maximum gap between two flat surfaces, which prevents flame transmission for all concentrations of a respective flammable gas/air mixture propagating from an inner explosion chamber through a 25-mm long path into an outer explosion chamber. The test conditions are standardized in IEC 60079-20-1.