... system, with diesel engine pump, jockey pump and control panel. D+J DIESEL FIRE PUMP SYSTEM.Operation: 1 diesel + 1 JockeyCapacity ... electric pump capacity, fuel tank.2. Jockey pump, horizontal or vertical, 10, 15, 20, 30, 40, 50, 75, 100, 125...GPM3 ... operation, battery charger, 12 volt battery to start the engine. D+J Diesel Fire Pump System