The COM-2P employs two discrete single stage PR-1-type regulators built into a single body.These regulators serve as the primary and secondary changeover regulators with the common outlet port connected to a single PR-1 Series regulator.This allows for the non-stop delivery of gas from bottles with only a 0.01% change in outlet pressure as the inlet pressure varies.The hardware comes mounted in an attractive 300 series stainless steel panel that is suitable for surface mounting near the bottles. Labels are permanently silk-screened on the face of the panel for easy identification of process ports and gauges. The unit comes complete with pressure gauges and shutoff valves. Suitable for gases and liquids.