The Q4000 will then have control over the valves that connect the choke and kill lines to the well proper.

那时Q 4000会控制连接阻塞管和压井管到油井的真空阀。

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Reduced Pressure Zone Assemblies must be inspected and tested periodically, in accordance with local codes, to ensure proper operation of check valves within the unit.

减压区总成必须按照当地有关规定定期检查和测试，以确保这种装置内的止回阀能够正常运行。

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Reliable and proven inlet air control valves and purge valves assure years of reliable shifting of towers and proper dryer operation (Lifetime Warranty) LF Series 25-620 CFM.

可靠的和经过验证的进气控制阀和清洗阀可靠保证年和适当的塔机操作(终身保修)LF系列25 - 620立方英尺转移。

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The DOT issued a proposed compliance order directing Exxon to conduct training for supervisors and pipeline control room workers, including on the proper operation of remote control valves.

NPR: APNewsBreak: $1.7M Penalty Proposed In Exxon Spill

The Q4000 will then have control over the valves that connect the choke and kill lines to the well proper.

ECONOMIST: The Gulf oil spill