| 摘要 |
A balloon neck fitting includes a check valve section having a peripheral housing and a peripheral flange extended radially outward from the peripheral housing for engaging with a larger balloon. The housing includes a chamber for receiving a gas supplying nozzle, and one or more extensions engaged with the neck of the balloons. Another housing is formed on top of the housing and having an outer diameter smaller than that of the housing for engaging with a neck of a smaller balloon, and for allowing the smaller balloon to be inflated and received in the larger balloon.
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