... 250 2. MediumPure natural gas3. Type Z-type4. System inlet pressureMpa3-175. Discharge pressure Mpa256. Displacement m3/ ... When motor overload, alarm and shut up.g) System pressure excessive, shut up automatically;h) Start up ... Cooling system, Explosion-proof Motor(37kw), Buffer system, Oil warming system, High-pressure padding, Piston Ring, Meter Display System/, Segregator, Water cycling system, ...