1.运用消音器
消音器只需直接安装在控制阀的下流，就能有用减低控制阀的噪音。不过，在运用消音器时，常常会遇到一些题。首先，消音器要有用，就需要低流速。但低流速却往往使消音器显得无实用价值，特别是在大流量体系中更是这样。其次，音响要素常常和流体介质不相配合。第三，操作条件或许大恶劣。
2.进步管道的标号
添加下流管道的管壁厚度，可以有用减低控制阀的噪音。不过，因为噪音一旦发生，并不敏捷沿着下流管道长度散失，因此，这一办法一般有必要用在整个下流体系上。
3.管道隔绝法
这一办法，和添加管道管壁厚度的办法相同，也可以有用减低电动阀所产生的噪音。不过，有必要留意三个约束。第一，和改变管道标号的办法相同，隔绝法也有必要用在整个下流体系上。第二，有必要细心安装隔绝资料，免得资料变成“无功效”，以致严峻减低这一办法的有用性。第三，一般用于管道体系的隔热办法，其减低噪音的有用性是有限的。因为合适的资料往往不适用于高温，所用的粘合剂或许熔化，从根本上改变了自身的音响质量和热力特性。
Noise control methods for electric valves:
1. Using a silencer
The silencer only needs to be installed directly downstream of the control valve to effectively reduce the noise of the control valve. However, when using silencers, some problems are often encountered. Firstly, in order for a muffler to be effective, a low flow rate is required. However, low flow rates often make silencers appear impractical, especially in high flow systems. Secondly, the sound elements often do not match the fluid medium. Thirdly, the operating conditions may be extremely harsh.
2. Marking of Progress Pipeline
Adding the wall thickness of the downstream pipeline can effectively reduce the noise of the control valve. However, since noise does not dissipate quickly along the length of the downstream pipeline once it occurs, this method is generally necessary to apply to the entire downstream system.
3. Pipeline isolation method
This method is the same as adding pipe wall thickness, and can also effectively reduce the noise generated by electric valves. However, it is necessary to pay attention to three constraints. Firstly, similar to the method of changing pipeline labeling, isolation method is also necessary for the entire downstream system. Secondly, it is necessary to carefully install isolation data to prevent it from becoming "ineffective" and severely reduce the usefulness of this method. Thirdly, insulation methods commonly used in pipeline systems have limited effectiveness in reducing noise. Because suitable materials are often not suitable for high temperatures, the adhesive used may melt, fundamentally changing its own sound quality and thermal characteristics.