These ANEST/Iwata paint gun air-adjusting valves will let you take control of airflow.
They include a gauge mounted to them that shows you 0-140 psi with colored ranges to identify the correct position of the pressure.
The valves are manufactured from steel and feature NPT inlets and outlets for easy installation.
WARNING: This product can expose you to chemicals including LEAD, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.