A gate valve and a rotary butterfly valve are shown acting as the upstream throttling valve.

图中显示一闸阀及一旋转的蝶阀用作上游节流阀。

This paper illustrates operation principle of the digital throttling valve and design of its control system.

论述了直控步进式水压数字节流阀的工作原理及其控制系统的设计。

A throttling valve core is axially provided with a small throttling hole and an adjusting hole for throttling.

节流阀芯轴向设有节流小孔和调整孔，用于节流。

The automatic test has been realized by adopting the proportional throttling valve for loading and by use of the CAT technology based on the virtual instrument.

系统采用比例节流阀加载方法以及基于虚拟仪器的CAT技术，实现了测试过程的自动化。

Valve typically used for opening and closing applications, not recommended for throttling applications.

闸阀通常用于启闭应用场合，不建议用于节流应用。

The high-pressure liquid refrigerant through the expansion valve, because the expansion valve throttling pressure drop, the refrigerant into normal temperature low pressure liquid.

常温高压的液体冷媒流过膨胀阀，因为膨胀阀的节流作用压力降低，使得冷媒变成常温低压的液体。

Crane globe valves are highly efficient for services requiring frequent operation and throttling when pressure drop across the valve is about 20% of inlet pressure.

当通过阀门的压降为管路压力的20%左右时，美国克雷恩截止阀就能够高效应用在频繁操作和节流的应用场合。

V-port trim has a more linear throttling curve than plug or ball discs, but none of these trims are recommended for continuous severe throttling which may require using a control valve.

形端口阀内件截止阀比塞形阀瓣或球形阀瓣截止阀具有更加线性的节流曲线，但是，所有这些类型的截止阀都不建议连续用于严格的节流应用中，这种情况可能需要采用控制阀。

Closer throttling, creating higher pressure drops may cause cavitation or excessive velocities which could cause high noise levels, vibration and possible damage to the valve or adjacent piping.

如果节流较小，将因此产生更高的压降将可能导致空穴现象或超快流速，从而导致噪音太高，振动剧烈，可能损坏阀门或相邻的管路。

This full-featured valve is engineered to provide accurate throttling control and shutoff for industrial, chemical and water treatment applications.

这种性能全面的阀门设计为工业、化工和水处理应用领域提供精确节流控制和关闭功能。

The rotating valve is connected respectively to four hydraulic lock through two throttling governors which are connected respectively with the four oil and gas springs.

转阀通过两个节流调整器分别与四个液压锁相通，该四个液压锁分别与相应的四个油气弹簧相连接。

The paper analyses and introduces the calculation of programmers and its problems in the machining of control valve spindle with multiple throttling using numerically controlled lathe.

介绍了应用数控车床加工调节阀多级节流阀杆时程序的计算及编程中应注意的问题。

If uneven pressure should cause the regulator to pulsate, its action can be stabilized by throttling the valve.

如果不稳定的压力导致调节阀波动，则这种波动通过对阀门节流将稳定下来。

Continuous severe throttling applications may require a control valve.

持续严酷的节流应用场合可能需要配置控制阀。

Butterfly valve is closed parts (valve flap or disc for disc), around the valve axis of rotation to achieve the open and close a valve, in the pipeline mainly as shut off and throttling effect.

蝶阀是指关闭件(阀瓣或蝶板)为圆盘，围绕阀轴旋转来达到开启与关闭的一种阀，在管道上主要起切断和节流作用。

Recommended for close throttling and most all severe conditions, not to exceed the valve ratings.

建议用于关闭节流和大多数严酷的环境，但不能超过阀门的额定值。

The gas throttling governing system comprises a pressure-limiting valve, a speed-limiting valve and a partition board.

气体推助器包括波纹管及内部弹簧、排气阀、吸气阀，气体节流调节系统包括限压阀、限速阀、隔板。

Fisher 8560 Fisher 8560 is a high-performance butterfly valve with a splined shaft for throttling control.

8560是一款高性能蝶阀，可用于绝大多数工况。