Priority introduces the main body of a book almost growing water supply pipeline valve in common use choosing the type and matters needing attention.
本文重点先容几种给水管路的常用阀门选型及注意事项。
Full welding of the ball valve body can be directly buried in the ground, so that in case the valve from erosion, the maximum service life of up to 30 years, oil, natural gas pipeline valve ideal.
全焊接阀体的球阀，可以直埋于地下，使阀门内件不受侵蚀，最高使用寿命可达30年，是石油、天然气管线最理想的阀门。
The pipeline to Zawiya passes through rebel-held land near the Nafusa Mountains: pouring cement into a valve would shut it down.
通往Zawiya的输油管经过Nafusa山脉附近反抗军掌控的地盘︰只要将水泥灌入其中一个阀门，输油管就完全停摆。
Both the valve and both ends of connecting pipeline must be supported.
阀门及其与管道连接的两个端口都必须得到支撑。
Lower the valve into position between the pipeline flanges.
将阀门放低，使其进入管道法兰之间的位置。
In some sectors certain operating conditions (such as the petroleum sector, pipeline), not allowed to use the path contraction of the valve.
在某些部门的某些工作条件下(如石油部门的输油管线)，不允许采用通径收缩的阀门。
Do not rely on the flange bolting to support the valve or connecting pipeline.
不能依赖法兰螺栓来支撑阀门或连接管道。
The relief valve and the pipeline are both important components of the hydraulic system, and that system including of relief valve and pipeline and constant pump is the basic loop of it.
溢流阀和管道都是液压系统的重要元件，而溢流阀、管道和定量泵组成的系统又是液压系统的基本回路。
The same force tends to reduce the seal on the pressure side with the result that bonnet cavity and the valve stem packing are nearly always subjected to maximum pipeline pressure.
而压力侧以相同的力削弱了密封，这样使阀盖腔室和阀杆填料几乎总是承受最大管道压力。
Install the valve back into pipeline following installation procedure.
按照安装步骤将阀门安装到管线内。
That valve may be used to control this pipeline.
那个闸门可以用来控制这条管线。
The amount of air pressure required to close the valve depends upon the line pressure of the pipeline.
关闭阀门所要求的气压值依赖于管道内的管道压力。
A throttle valve must be installed along outlet pipeline when the conditions of work are not clear or stable, this can guarantee operation at the design point.
当工作条件不明或不稳定时，出口管路中必须安装节流阀，以保证泵在设计点运行。
Operation knowledge and maintenance experience of pipeline safety valve.
具备管道安全阀使用知识和维护经验者。
Integrating the dryer, unloading valve and multi-circuit protective valve, the air processing unit (APU) makes the pipeline more compact and reliable.
空气处理单元APU，集干燥器、卸载阀、多回路保护阀的功能于一体，使整车管路简洁可靠；
This system has huge database contain familiar 29 fault phenomenon, overlay hydraulic pump, hydraulic valve, hydraulic urn, pipeline and hydraulic accessory 160 piece of fault information etc.
本系统知识库庞大，包括常见的29 种故障现象，涵盖了液压泵、液压阀、液压缸、管路、液压辅件等160 余条故障信息。
Close the door distribution discharge valve and, if cut-off valve is opened, pumping water to the piston from the pipeline until the pump output.
关闭分配阀卸料门，如有截止阀则打开，泵送清水至活塞从输送管输出端泵出为止。
This valve should be in the general level of the pipeline installation.
此阀门在管道中一般应当水平安装。
DO NOT TRIM any excess gasket material, it will seat itself after bolting the valve into the pipeline, thus providing a positive seal.
不要修正任何多出的垫圈材料，这些多出部分会在将阀门用螺栓锁到管道后重新回到正确的位置，从而实现正常的密封。
The device mainly consists of connection flange, brake disc, braking caliper, bracing frame, force-multiplier pump, hydropneumatic pipeline and proportional control valve.
该装置主要由连接法兰、刹车盘、刹车钳、支撑架、加力泵、液气管线和比例控制阀等组成。
NOTE: For Australia and New Zealand, Pipeline strainers should be installed between the upstream shutoff valve and the inlet of the backflow preventer.
注意：适用于澳大利亚和新西兰：管路过滤器应该安装在上游关闭阀和防回流阀进口之间。
When more than one boiler is connected to the main steam header, a stop check valve should be installed in the pipeline between each boiler and the header.
如果连接主蒸汽热水器的锅炉不止一个，则在每个锅炉与热水器之间的管路上都应该安装一个截止止回阀。
In particular, closer to the pipeline from the city to prevent the leakage of the valve is particularly important.
尤其是离城市较近的管线，防止阀门的外漏显得尤为重要。
Take apart all valves along the pipeline for washing before installation, check whether valve handles are flexible. The valves can be installed after passing the pressure test.
管路上的各种阀门在安装前要拆开清洗，检查阀柄是否灵活，并经试压不漏后方可安装。
Before performing any maintenance on the valve be sure the pipeline has been depressurized.
在进行阀门维护之前，确保管道已经卸压。
Before performing any maintenance on the valve be sure the pipeline has been depressurized.
在进行阀门维护之前，确保管道已经卸压。
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