In real life, a high-pressure air compressor water gun for car washing consists of: a high-pressure air compressor water pump, water hoses, and a water gun.
An air compressor for construction uses a drive unit (diesel engine or electric motor), an air compressor, and an air receiver (air storage chamber).
A car wash water gun works by drawing water in through a pump, compressing it, flowing through the water hose, and finally being ejected from the water gun. The water gun controls the water spray by adjusting the flow rate at the nozzle. The pressure used for car washing does not exceed 8 MPa, generally between 5 MPa and 6 MPa.
Air compressor principle: The air compressor draws in fresh air through the intake end into the primary air chamber, compresses it, and discharges it into the secondary air chamber for further compression. The compressed air is then stored in the air storage chamber and finally transported through pipelines to the washing machine for use. Its power comes from a diesel engine or electric motor, either directly or in conjunction with the motor.

