Patent ID: 8167003

Claim:
A refueling system comprising: a nozzle configured to dispense fuel through a fuel path thereof into a vehicle tank, said nozzle including a vapor path configured such that vapor recovered from said vehicle tank during refueling is passable therethrough; a sensing valve disposed in said vapor path, wherein said sensing valve is configured to generally block the associated part of said vapor path when a sufficient vacuum from said vehicle tank is applied to said sensing valve during refueling; and a regulator valve disposed in said vapor path and arranged in series with said sensing valve, said regulator valve being configured to regulate the level of vacuum applied by a vapor pump to said sensing valve, wherein said nozzle includes a main vapor valve which, when closed, generally blocks the flow of vapor through the associated portion of said vapor path and which, when opened, generally does not block the flow of vapor through the associated portion of the vapor path, and wherein said sensing valve and said regulator valve are both positioned upstream of said main vapor valve relative to the flow of vapor through said vapor path during vapor recovery.