Abstract: An automated tanker unloading system has a plurality of electronically controlled valves to control gas pressure within a tanker trailer and to control the delivery of product. A plurality of electronic gas pressure transducers sense internal gas pressure within individual hoppers of the trailer and sense internal gas pressures within a hot hose and a product hose and convert the sensed gas pressure into an electronic signal. A plurality of pressure carrying pipes transmit positive and negative pressures between the valves and the hoppers and the product hoses and the hot hose. A processor is programmed to analyze electronically inputted data from the transducers and to then send signals to control the valve functions.