... features of ZW compressor: ZW-1.7/8-250 type natural gas booster compressor with compact structure, good ... water cooling system is vertical and 2 or 3 tage type, mainly consists of fuselage, crank, connecting rod, piston, ... . The compressor is skid-mounted type with the main unit and electric motor fixed on the skid, integrated the ... of electric motor (kw): 132 Water-cooled ZW-type CNG Compressor