Feature: 1. The shell of this air compressor is made of thick metal plate, which can reduce working noise. 2. This low pressure safety valve can release the pressure of the high pressure tank and prolong the service life. 3. The low‑pressure air storage and filter cylinder of this air pump can filter oil and water. 4. The optimized drainage function of the overflow valve helps drain the filtered water to the outside of the machine. 5. This switch has a waterproof cover to prevent water from entering and causing a short circuit. Specification: Item Type: Air Compressor PumpColor: Blue Purpose: High pressure air pump Fillable Container Capacity: 0-3L Pressure Range: 0-40mpa Working Pressure: 0-30mpa/0-4500psi Compression Level: Secondary compression Air Pump Voltage: 220V-50HZ/110V-60HZ Power: 1800W Cooling Method: Air cooling + water cooling Thermometer: Power supply 2 LR44 button batteries (not included) Please see the video for the specific battery installation method. Outlet Pipe Connector Type: 8mm quick connect female connector, (Approx. 8mm / 0.3in)US tire connector, M10 x 1 external screw Application Scope: Industrial high pressure test, high pressure container inflation, CO2 aquarium gas cylinder inflation, Mini diving bottle inflationSize: Approx. 21.5cm / 8.5in31cm / 12.2in 17cm / 6.7inHow To Use: 1. Check/add oil to the corresponding position (see the instructions or ask customer service for details). 2. Replace the breathing plug. Replace the breathing plug in the circle with the transport plug on the machine. 3. Install the (oil-water filter) the seal gasket is already present at the factory, and just tighten it properly. 4. Install the air outlet pipe. 5. Install the water pump. 6. Turn on the power supply of the air pump and start water circulation. 7. Connect the outlet pipe to the container, tighten the pressure relief valve after starting the machine, adjust the required air pressure, and press the switch to start inflation. . Package List: 1 x Air Compressor Host1 x Power Cable1 x Outlet Pipe2 x Water Pipe1 Box Water Pump(1 x water pump + 1 x adapter)1 Bag Oil-Water Separator Accessories(1 x water separator + 2 x gasket + 2 x washer + 25 x filter sponge + 25 x filter rod)1 Bag Accessories(1 x breathing plug + 2 x pressure relief screw + 1 x side drain plug + 1 x high pressure valve sheet + 1 x low pressure check valve + 7 x explosion-proof valve + 4 x washer + 5 x gasket + 2 x high pressure gas ring + 1 x US plug valve connector)1 x Anti-Vibration Pad1 x User Manual Note: The water pump is directly plugged into the socket next to the machine, and the plug specification is fixed. The water pump voltage of the US Plug air pump is 110V, and the other plug specifications are 220V.Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering.