Screw compressors specifically developed for low and medium temperature Refrigeration, ensuring optimum performance and high reliability. A total of 5 ranges, with 120 models spanning an 85 to 10.850 m3/h displacement range, offer operation with both standard refrigerants and Ammonia, including the unique semi-hermetic configuration using Ammonia (SRS). Typical applications include marine refrigeration, petrochemical, pharmaceutical and chemical processes, industrial refrigeration, cold chain logistics, ultra-low temperature refrigeration, high temperature ammonia heat pumps and NH3/CO2; cascade refrigeration systems. The SRMTEC range offers high efficiency variable frequency configurations (RW5), open type versions including high pressure configurations and single or 2-stage models. Customer specified Vi control and the possibility to apply variable frequency drive ensure highest efficiency levels.