Note: For the oil can't be shipped, please add the oil before using (Ordinary diesel oil, motor oil) With internal water separation configuration and explosion - proof valve, so this item is more expensiver than others. Specifications: Power supply:220V 50Hz Power: 1.8KW Rotating speed:2800r/min Working pressure:0-30Mpa Lubricating system:splash type Compress mode:two-stage compression Cooling mode:water cooling Weight:15.8KG Size:360*180*370mm Noise:85db Application: Air tightness test, pressure vessel, withstand pressure experiment and other industrial fields Package Contents: 1X main machine 1x water pump 2x pressure relief screw 1x breath nozzle 1x water pipe 4x explosion-proof disc 5x filter element 1x set of O-rings 1x flter NOTE: - Please add illubricating oil before you start using the machine first. -No.46 wear resistant hydraulic oil.Don’t forget to put the lube oil into the compressor before running; - When running, if the machine vibrates violently, please add pad or towel under the compressor; - When the compressor working, the cooling system must be working at the same time; - The machine must not be working without oil, so you must pay attention to the level of oil.