Because the Premier Demand Drain (PDD) combines the best features of float type drains and timer-operated solenoid drains, it accurately detects and removes accumulations of condensation from compressed air systems on demand without wasting air or clogging.

In the PDD a stainless steel magnetic float rides the surface of the condensate which collects in a see-through reservoir. The float rises with the condensate until it activates the upper-level reed switch. The switch opens a unique, clog-proof valve which stays open until the condensate level drops activating the lower-level reed switch which closes the valve before any air is lost.

Lights indicate when the drain is receiving power and when the float switch has activated the valve.