Abstract: A petroleum dispensing system having a dispenser data distribution system with controllable disconnectors for improving on the conventional wiring that connects dispenser data circuits to the system's site controls. The system includes an emergency stop control system, emergency stop disconnects, data wiring terminals, a circuit for connecting and grouping data signals, and dispenser data disconnect and bypass means.

Abstract: A fuel dispensing system. The system includes a plurality of storage tanks for storing a plurality of fuel products; at least one dispenser; at least one pump for pumping fuel from the storage tanks to the dispenser; and a pump controller connected to the dispenser and the pump having a plurality of individual selectors for selecting a specific fuel product. In the preferred embodiment, the pump controller includes a plurality of individual selectors for selecting a specific fuel product; and an interconnecting expandable length bus for connecting additional station components, such as pump control devices, to one another. The system may further include an emergency stop system.