In-line water traps/filters are necessary to separate water and oil from the airflow during the air compression process.
A regulator is combined with the filter to increase or decrease the pressure. A pressure gauge indicates the set pressure.
Visible arrows are on the outer body of the casing that indicate the direction of installation to correspond with the direction of airflow.
Drain: Manual
A push-in fitting is located on the drain to allow fluid to drain to a central point via PU tubing (not included).