How to adjust the size of air pressure regulating valve

Close the valve downstream of the pressure reducing valve, find the position to adjust the pressure, rotate clockwise, the outlet pressure will increase, and rotate counterclockwise, the outlet pressure will decrease. There are two kinds of pressure adjustment of air pump. First of all, tighten the spring of the pressure reducing valve slightly, paying attention to leave room, and don't tighten it to the end. This is turning up, turning down and slightly loosening the pressure reducing valve spring.

The function of the dryer is to remove moisture from the air and dry the air. Provide clean air to the air pressure system of the truck. There is an air pressure regulator under the dryer to adjust the air pressure. After finding the air pressure regulating valve, don't adjust it directly, first observe the barometer to ensure that the air pressure does not exceed 6 pressure values. Because for beginners, if they don't know how to adjust the pressure, it's easy to get too much pressure, and it's very dangerous for the air pump to explode.