A system which is mounted to the wall in close proximity to the appropriate beer to be dispensed and uses the pressurized gas from an empty beer keg 9 to dispense beer from another keg 12 through the changeover valve. The empty keg acts as a secondary supply of gas to enable continuation of beer dispense. The system is connected to the existing gas supply using the changeover valve 6 which is located between the original isolation valve 3 and the keg that is to be dispensed, this then allows the reutilisation of the gas from the previously used keg. The pressure gauge 6D is to indicate the pressure left in the empty keg. The switch 6E on the valve should be turned to point towards the pressure gauge to use the gas from the empty keg and turned the other way to use gas from the bottle supply.
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