The pressure filter regulator, also known as the maintenance unit, is used in order to regulate the pressure of the pump and to set the delivery capacity of the pump.

In addition, this regulator has a moisture separator and a fine filter in order to keep water and dirt away from the compressed air components in the pump.

It is available in three sizes in order to reasonably operate any pump size.
A needle valve for precise fine regulation of the delivery capacity from 0-100% is optionally available.