4 cylinder semi-hermetic refrigeration compressor, variously applied for cold rooms, refrigeration projects etc. Power supply could be 380~420v/3pH/50Hz, 440~480v/3pH/60Hz...Refrigerant could be r22, r134a, r404a, r507a or r407c. The design of the compressors with the requirements of international environmental protection, for the working mediums of HCFC-22, R404a, R407a, R407b and R407c.
