Hydrochlorine diaphragm compressor

In a chemical plant in germany a Hydrochlorine diaphragm compressor of type MV 4801 from sera is used.
The desing is vertical, 1-stage and water cooled.
The inlet pressure is 1.4 bar (a), the output pressure is 3.5 bar (a) at a flow rate of 28 Nm3/h.