| 摘要 |
A filling system includes a container, a cap for the container defining an egress and an ingress for a material from and to the container, respectively, a tank in fluid communication with the container through both the ingress and the egress of the cap, and means for urging the material between the container and the tank through the egress and ingress of the cap. A cap for a container includes a cap base engageable with the container and defining an inlet port and an outlet port, an inlet coupling in fluid communication with the inlet port, a draw tube, and an outlet coupling in fluid communication with the draw tube.
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