4~22KW Oil-injected screw type air compressor(outlet air oil content not over 3ppm, inverter type available) Features of RICH Oil-injected Screw Air CompressorSafety & ReliabilityFull consideration in power phase dislocation,phase lack,motor over-loading,overhigh temperature and overhigh pressure protection.All main active parts such as airend,valves,motor bearings and coupling are of world ...