Main specification other gas bottle, let the oxygen pressure of this gas bottle achieve Item Specification Max exhaust pressure 30MPa Exhaust Capacity while pumping 3L/min Grade of compress Grade 2 Max compress rate 8 Revolution of crankshaft 440rmp Plunger stroke 30mm Plunger diameter Grade one ,18mm Grade two,12mm Power of motor 2.2kw Rotate speed 1410r/min Voltage of motor 380V/50Hz Dimensions 860X565×640mm Weight 116kg