What pressure does a PSA oxygen plant deliver?

The Global Fund note says a PSA air compressor pressurizes the incoming air to 4.5 to 7 bar, and the 2020 WHO interim specification asked for a feed air compressor of at least 750 kPa. The ULTRAOX datasheet (2022) states that every 1 bar increase in compressor pressure adds 7% to total electricity consumption, and that the plant is designed to keep a continuous stable pressure in the oxygen network.

AIGA 113/20, adopted from EIGA Doc 195, requires a pressure reducing station whenever the produced or stored pressure is higher than the pipeline distribution pressure. It says a booster compressor could be needed to reach the nominal pipeline pressure of EN ISO 7396-1, usually only for a double-stage distribution system, where the nominal pressure is 8 to 9 bar(g). The Global Fund lists as a PSA benefit that oxygen leaves the generator at about 4 bar, often suitable for delivery, without an additional booster; where national standards require piping above 6 bar, it says a medium pressure booster can raise 4 to 6 bar up to 11 to 12 bar.

The 2020 WHO interim specification placed a gauge or sensor between the source and the line pressure control to monitor the output pressure. For pressures across the hospital network, see what pressures do medical gas pipelines run at.