Pure copper wire motor. High pressure safety valve. Oil and water separation. Compression method: secondary compression. Package weight 17.5KG. Low pressure gas flow: 136L/min. High pressure gas flow: 7.7L/min. Machine size: 33.5×17.5x34CM. Suitable for: All sizes of high pressure gas cylinders, tubes, valves, high pressure pipelines within 6.8L, suitable for long-term use, good gas cooling effect, convenient maintenance.