| 摘要 |
The system comprises a pump with shut-off valve in the pipe between the pump and bottom valve and another shut-off valve in the pipe from another bottom valve; an anti-return valve; a flow restrictor; a shut-off valve or stop-cock and a reel or drum on which is rolled up the hose which connects with rapid closing valve; flow restrictors and corresp. manometers, and a decompression valve.
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