Articles in this category The order in which to fit the GAS IT valves to a GAS IT Tank. This information is only for the fitment of GAS IT supplied valves. When fitting valves into the GAS IT the valve plate must be directly at the top of the tank ( looking down inside t Manual outlet tap ( Valve Fitment 1 ) This is the first valve that you must fit in this order. Pressure Relief Valve ( Valve Fitment 2 ) This is the 2nd valve to be fitted in this order. When fitting t 80% fill stop valve ( Valve Fitment 3 ) This is the 3rd valve to be fitted in this order. When fitting the 80% shut off valve into the tank you need to make sure t Level Indicator Valve ( Valve Fitment 4 ) Black Airbox / Valve Cover ( Valve Fitment 5 ) The black Airbox / valve protector must be fitted before you fit the fi