sk screw air compressor with excellent performance, stable operation, ... checking, safety valve, compressor nose, air and oil bucket and accordingly connections, the dimension and shapes of the machine ... , efficiency 10-20% higher than the 4/8 teeth screw.Air Inlet ValveAdopt Italy VMC patented compressor valve ... 213.612.31102850×1900×20003200SK-132242320181322850×1900×20003300 SK screw air compressor