Mepco (formerly Dunham-Bush) mechanical alternator for older model duplex condensate pumps featuring Square "D" 9038-AG-1-S1.
Square D 9038CG33 mechanical alternator for Hoffman Specialty, Mepco, and Shipco condensate pumps. Mechanical alternators are used on duplex condensate units to "alternate" between the two pumps on each cycle which gives longer life to the pumps. They will also turn on both pumps if the demand is required.
Square D Pumptrol mechanical alternator less float for alternating the operation of two pumps or motors. This alternator closes on rise.