TCP Global Brand Professional Air Filter and Regulator Control Unit with Gauge (1/4" NPT) Improve your Spray Gun and Air Tools Performance! Use this Regulator for Accurate, Moisture-Free Airflow Regulator with Gauge: Provides precise adjustment of airflow operating air pressure up to 150 PSI Full control of operating air pressure is provided by the locking airflow adjustment knob. Water Moisture Trap Filter: Removes solid particles and condensation associated with compressed air.