Oil-free air compressor compared to different places of oil-injected air compressor
From the oil content point of view, the oil and no oil in the air compressor generally refers to the amount of oil in the exhaust outlet of the air compressor. There is also a completely oil-free air compressor, which is not Oil lubrication is used, but water lubrication is used, so the final discharge of gas without oil is called water lubricated air compressor.