Outstanding performance design Offer 100% oil-free compressed air Efficient air cooling system-permiting 24hrs running wihtout any failure continuum Single compressed( below 15HP) and Double compressed (below 25HP) design V-Belt driven, including belt protecting-cover and belt open/close controller Air-Cooling type of after air-cooler. Normal work pressure: 0.86 Mpa Magnetism-starter(below 10HP) or star delta -starter(above 15H) Get compressor to Auto-start/stop