| 摘要 |
A liquid transfer method and apparatus has primary and secondary transfer lines, wherein the primary line carries fluid being moved from a supply container through a transfer assembly to a receiving container, and the secondary line carries pressurized inert gas to substantially purge liquid from the primary line. Pressurized gas is admitted into the system upon actuation of a liquid level sensing float valve in response to the liquid level in the transfer device. The pressurized gas actuates the closure of a valve on the primary line near the receiving container. The pressurized inert gas proceeds to force residual liquid out of the primary lines into the secondary lines and into the receiving container. Manual inspection and valve actuation is used to terminate gas flow and complete the purging process.
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