650 Nm3/hr Hydrogen single stage compressor system mass flow 62.2 kg/hr, suction pressure 16 bar @ 35 – 40 deg C, ambient temperature -20/+40 deg C, water cooled compressor performance 41kw, single stage, 85mm stroke, speed 780 rpm, average piston speed 2.21 m/sec, V-belt driven by 51kw, system also includes (1) horizontal heat exchanger (gas cooler), (2) pulsation dampers (1 for suction, 1 for discharge), pipework, pressure gauges etc