Product Advantage 1.Belt-driven three cylinders unit, with stable & completely closed belt guard 2.Motor circuit breaker,start capacitor or three-phase versions for good starting performance 3.Easy-open drain valve 4.Pressure switch with cut-in/cut-off pressure 5.regulator with gauge to show pressure 6.Quick connector is available 7.Petrol engine air compressor with master unloader& throttle control for better pressure control & petrol saving 8.Plastic coating tank