How to use foam foam gun for car maintenance

Foam gun is a kind of car maintenance products, which mainly cleans the car. It uses water, air, and foam to produce rich foam through the jet suction to clean the car. How does its specific operation work?
The first step: when the foam gun is used in various types of foam mixture, ensure that the ball valve is closed.
The second step: when the foam gun is used to self-absorb foam under the condition of pressure water, ensure that the ball valve is fully opened.
The third step: the foam gun is equipped with a round handwheel for easy operation and protection of the foam gun. During operation, the user must firmly grasp the handwheel of the foam gun; at the same time, the pressure of the water or mixed liquid supplied to the gun is slowly Increase, to ensure that the use pressure range is not exceeded, to avoid injury to the user due to sudden impact or excessive pressure.
Step 4: Use the foam gun to spray in a downwind direction to avoid spraying on the user.
The above four steps are just a brief introduction about the use of foam guns, you can refer to it, and you must strictly follow the instructions when using car maintenance products.