Abstract: A leak detection system and method of detecting leaks are disclosed for detecting leaks in a dispensing system having a pump, dispenser, conduit connecting the pump and dispenser and a valve to isolate the pump from the dispenser when a fluid is not being dispensed. The leak detection system includes a leak detector including an enclosure in fluid flow communication with the portion of the conduit downstream from the valve, a member responsive to the fluid condition within the enclosure and signal means responsive to the fluid condition responsive member for indicating the existence of a predetermined fluid condition.A valve seating means which is pressure activated to forceably seat the valve also is provided.

Abstract: A fluid dispensing nozzle, e.g., a nozzle for a gasoline station filling pump, is provided with a trigger retaining mechanism which allows an operator to retain the nozzle trigger member in its operative position by exerting a continuous relatively low manual force in contrast to the relatively high manual force required to operate the trigger member. The trigger member automatically returns to its inoperative position immediately upon release of the manual force on the trigger retaining mechanism. The fluid dispensing nozzle is particularly suitable for use in self-service gasoline filling stations.