Screw Air Compressor,Air Compressor,piston air compressor Product Description25HP, rotary screw compressor Type: SC-18A Specification: -Model: SC18A, oil injected screw compressor -Free air ... 1/4 inch Performance Features: -high volumetric efficiency screw air end built by Germany and Italy, ... Devices for protection: Automatic shutdown of high temperature, high pressure, low oil, Phase protection, ...