With double-acting models, the pressure increase is made possible by means of the area ratio between the larger diameter air drive piston directly connected to two smaller diameter gas pistons. These latter having differing diameters to each other. The reciprocating action of the gas booster draws gas at low pressure into the booster then displaces the gas at a higher pressure output from the booster into a closed system.

On 2-Stage Double Acting models, the inlet gas pressure is used to provide additional energy allowing lower inlet pressures, higher output pressures and higher flowrates to be achieved. When using a 2-Stage Double Acting Gas Booster, care must be taken to ensure that the outlet pressure remains lower than the maximum supply pressure multiplied by the combined area ratio of the 2 Gas pistons since this can cause “interstage stall”. To avoid this the inlet gas pressure can simply be reduced.

All Models can easily be incorporated into easy to operate Standard System gas power/transfer units.