Abstract: A plurality of hydrocarbon storage tanks, each storage tank has a) a fill conduit, b) a vapor recovery conduit and c) a vent line. The vent lines of the hydrocarbon storage tanks are directly connected to the vapor recovery risers and a manifold bar is connected to every vent line. The system allows for the maximum recovery of vapors during simultaneous filling of at least three storage tanks. The system also includes a vapor recovery pipe connected to at least one of the vent lines for receiving the vapor recovered from the vapor-recovery unit of hydrocarbon nozzles which dispense hydrocarbons to automobiles.