... pump, jockey pump and control panel. Fire pump system E+D+J,Operation: 1 Duty(electric) + 1 ... . Jockey pump, horizontal or vertical, 10, 15, 20, 30, 40, 50, 75, 100, 125...GPM4. Pressure vessel, ... for main electric pump, hand off auto selector switch for each pump, indication lamps for pump run ... and pump trip, pressure switch for the automatic operation, battery charger, 12 volt ...