Method and apparatus for dry testing vapor recovery systems

摘要

A vapor recovery valve (60) that includes two mechanisms for opening the valves is disclosed. The first mechanism opens the valve (60) when fuel is being dispensed by a fuel delivery system (10). The second mechanism selectively opens the valve (60) independent of whether the fuel delivery system (10) is dispensing fuel. A method for dry testing a vapor recovery system is also disclosed. The method involves disabling the fuel dispensing capability of the fuel delivery system (10), and then operating the vapor recovery system at a rate that corresponds to a predetermined imaginary fuel dispensing rate. Next, the vapor recovery path (30) is opened, and its operation is measured, followed by determining if it is sufficient for the imaginary fuel delivery rate.