SRS Semi-hermetic Two- stage Screw Compact Compressors include 5 models, displacement 141- 652m3/h  (50Hz),designed pressure 2.8Mpa. Compact structure, easy maintenance,  low vibration and noise, zero leak of refrigerant.The compressor is  applicable for R717. Vi can be controlled to ensure high- efficiency  operation under differentworking conditions.
Features of SRS semi-hermetic compound two-stage screw compressor
● “I”type patented profile, best lobe ratio of 5+7, highefficiency.
●Tailor- made materials are specifically used for NH3.
●Packaged  with the permanent magnet synchronousvariable frequency motor, which  regulates the rotorspeed to improve the operation efficiency of  thecompressor.
●Vi is selectable to ensure high efficiency operationunder various working conditions.
●Capacity control: step or stepless.
●Double  cooling is achieved through both lubricant oilcirculation and  refrigerant injection to ensure the longtime, stable and high-  efficiency operation of the motor.