The pressure regulator is used at the air inlet joint of the pneumatic gun, which is easy to install and remove. The manifold pressure is monitored in real time and the data can be adjusted and read. Use for best spray paint results. The pressure gauge is easy to install and maintain, and it is very practical. With the valve button, the air pressure can be adjusted as needed. The pressure regulator adjustment range is 0-10 BAR (0-150 PSI). With higher sensitivity and good selectivity, it is less prone to failure. The pressure gauge is compact, flexible, and lightweight. Due to its robust housing and excellent performance, it is not subject to wear or deformation. This tool is a necessary component for measuring air flow. The G1/4" threaded port of the air compressor can be used with the spray gun for display, adjustment, and pressure control. Using this spray gun pressure gauge can help you greatly simplify your work.