Gardner Denver XGDR-ENLD Series Electric-Operated Condensate Drain. Condensate enters the drain through one of the two inlet connections. As condensate is collected and the translucent reservoir fills, a stainless steel level switch rises. When the condensate reaches a designated level, the level switch sends a signal to the straight flow posi valve, which in turn opens a full-port drain. When installed, a light indicates power is being supplied to the drain. A second light indicates when the valve has been actuated by the float switch. An override switch is provided for manual operation of the drain.