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。
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。
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。
The design principle of hydraulic balance in air conditioning water system was illustrated and several kinds of balancing valves and their proper application in the system have been introduced.
阐述空调水系统水力平衡的基本设计原则，介绍几种平衡阀的工作原理及其在系统中的合理应用。
Annual inspection of all safety and control valves is required and necessary. Regular inspection, testing and cleaning assures maximum life and proper product function.
要求而且有必要每年一次检查所有安全阀和控制阀。定期检查、测试和清洗能够保证最长的使用寿命和正常的产品功能。
Annual inspection of all water system safety and control valves is required and necessary. Regular inspection, testing and cleaning assures maximum life and proper product function.
所有水系统安全阀和控制阀都需要也必须进行年度检查。定期检查、检测和清洗能够确保使用寿命最长和产品性能正常。
The proper method for draining both Y-pattern stop-check valves and isolation gate valves is shown for typical mounting positions.
图中所显示的是Y型截止止回阀和隔断闸阀排泄的正确方法的典型安装位置。
To actuate all valves it is necessary to provide certain data to assure proper sizing and prevent damage to the system.
为了驱动所需的阀门，有必要提供某些参数，以保证能够恰当选择所需的执行机构，防止损坏系统。
Assures proper flow and prevents damage to valves, controls and other equipment.
保证适当的流动，防止损坏阀门，控制系统和其他设备。
Design considerations for the thermodynamic system, plant layout, steam turbine proper, the oil system for governing and safety control, butterfly valves and some major auxiliary equipment are given.
文中叙述了该机组的热力系统、电站布置、汽轮机本体、调节保安油路系统、蝶阀以及几种主要辅助设备的设计情况。
The CAM lobes are so positioned on the camshaft as to cause the valves to open and close in the cylinders at the proper time with respect to the actions taking place, in the cylinders.
曲轴上凸轮凸角的位置使气门在恰当的时侯开关，以便与气缸的工作顺序相一致。
Valves are produced in a variety of design types and materials. Proper selection is important to ensure the most efficient, cost effective and long lasting system.
阀门的结构和采用材料多种多样。为了确保效率最高，成本最合理，系统使用寿命最长，阀门的正确选型非常重要。
Choosing proper opening lap value between governing valves can improve governing stage efficiency.
选择合适的调节阀重叠度能够提高调节级效率；合理的开启顺序可以减轻轴承载荷。
Overheating lengthens valve stems which prevents proper seating of valves.
气门过热增加气门杆的长度，使得气门不能正常磨合到位。
Overheating lengthens valve stems which prevents proper seating of valves.
气门过热增加气门杆的长度，使得气门不能正常磨合到位。
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