Oxygen generator 1). High productivity. 2). Low production cost 3). Reliable performance ... VPSA oxygen plant is mainly composed of blower,vacuum pumps, switch over valves, adsorption columns, and oxygen surge tank, etc. ... is saturated, the vacuum pulling will be done by the switch over valve and the vaccum pump. The adsorbed moisure,CO2 ... of use for the pneumatic parts. DP-006 VPSA Oxygen generator