| 摘要 |
A vapor assisted fuel dispensing nozzle has a projecting aluminum outer spout tube surrounding an internal fuel supply tube, and the tubes define therebetween a vapor return passage. The inner fuel supply tube extends from a spring biased poppet valve for producing a venturi suction in response to fuel flow. The outer spout tube encloses a stainless steel spout extension reinforcing tube having peripherally spaced vapor return flutes or grooves and an internal valve seat at the distal end for receiving a recessed valve member. In one embodiment, the valve member is connected by a stiff wire to a spring biased fuel pressure sensing disk slidable within a cylinder located upstream of the poppet valve. In another embodiment, the valve member is guided by a cup-shaped cage recessed within a tip chamber of the extension tube.
|
