| 摘要 |
A refueling coupling has an annular fitting having a bore, bayonet lugs and slots suiting it for connection to a pressure filling nozzle. A dry-break member is provided within the annular fitting, normally sealing to it with the aid of an O-ring seal. When the pressure filling nozzle is fitted, the dry-break member is depressed allowing fuel to flow. The dry-break member has a central aperture, normally closed by a side pivoted flap. The pivot is at a pin carried in lugs on the underside of a central disc having the aperture. The flap has a finger projecting between the lugs and having the pin passing through it. A spring is carried on the pin and normally biases the flap into its closed position parallel with the disc. An O-ring is carried on the flap whereby should unusual forces displace fuel against the flap it does not leak.
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