low pressure hydrogen compressor, vertical,two stage. V-belts Hydrogen humidity 100% compressor, capacity 65 kW, suction pressure, 1 stage 1.05 bar,30 C; 2nd stage 3,0 bar/34 C; discharge pressure abs 1 st stage 3.2 bar/145 C; 2nd stage 7.1 bar/122 C. 1st stage cylinder dia 370mm; 2nd stage 220mm. Cylinder material Ni-resist. Safety valve on 1st stage react at 3.5 bar; on 2nd stage 7.5 bar. Cooling water 5 cbm inlet temp 24 C@3 bar.