Refrigerant Gas Compressor, Screw type API619, building more than 3000 screw block per year, Halocarbons, Hydrocarbons, NH3 and C 02, 600 psig DWP, slide valve capacity control, variable volume ration (Vi), differential pressure lube system, Anti-friction bearings, Micro-panel / PLC control, 676 to 6500 cfm