Overview of HSO Open type compressors Models available HSO 3200 4 sizes: 3216, 3218, 3220 & 3221 Displacement at 50Hz: 286/343/415/469 m3/h HSO 4200 4 sizes: 4221, 4222, 4223 & 4224 Displacement at 50Hz: 508/616/722/808 m3/h HSO 2000 4 sizes: 2024, 2028, 2031 & 2035 Displacement at 50Hz: 853/1273/1728/2486 m3/h Designed for refrigeration, air conditoning and heat pump applications -Applied to single stage and multi stage systems -For use with R717 (Ammonia), normal refrigerant and many other process gasses -Oil injected for maximum reliability -Can be inverter controlled Comprises of the following: -Open drive single screw design -Suitable for all refrigerants including ammonia -Stepless capacity control -Oil drain connection -2 built in solenoid valves (HSO 3200 & HSO 4200) -Oil injection connection -Universal shaft seal (suitable for all refrigerants) -Economiser connection