... adopts D-shape symmetrical balancing reciprocating piston type. It is of air cooling, four-stage compression, stage 1 and ... mainly consists in the compressor, motor, belt transmission system, air system, buffering separator between stages, cooling system, safety protection, skid ... and warns.4. Supplying Arrange Compressor, explosion-proof motor, cooling device for stage 1 to stage 4, the safety ...