VENTEX (ESI TYPE 6) – PASSIVE EXPLOSION ISOLATION VALVE DESCRIPTION The risk of an industrial explosion occurs in many stages of production, transportation and storage of combustible dusts and gases. Apart from preventative measures to reduce the explosion risk, appropriate constructive explosion measures will protect against the effects of explosions. Protective techniques are generally classified into explosion venting, explosion suppression, containment and explosion isolation. The safety function of explosion venting and suppression is to protect process vessels from explosion over pressurization, while explosion isolation will keep explosions from spreading throughout a process. EXPLOSION ISOLATION: SAFETY FUNCTION The safety function of explosion isolation is to prevent flame propagation through interconnected pipelines to other process vessels and/or equipment or an unsafe explosion discharge into the workplace. Explosion isolation must be considered for all venting, suppression and containment explosion protection systems. Propagation of the explosion pressure and flame can occur even against the normal direction of process flow. The consequences of not giving full consideration to explosion isolation of interconnected vessels are flame jet ignition and pressure piling.