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Electric control valves have different choices of valve body materials according to different media. Commonly used carbon steel, corrosive ones choose stainless steel 304 or 316, 316L and other materials, and you can also choose fluorine-lined control valves. There are also several types of electric control valves with special contrasts: Low temperature regulating valve, high temperature regulating valve, high pressure regulating valve, small flow regulating valve, etc. During the on-site use of the regulating valve, it is caused by improper installation and use of the regulating valve, such as improper installation environment, improper installation position and direction, dirty pipelines, etc. When installing and using electric control valves, you should pay attention to the following aspects:: (1) The electric control valve is an on-site instrument and requires the ambient temperature to be in the range of -25 to 60°C and the relative humidity to be ≤95%. If it is installed in the open air or in high-temperature places, waterproofing and cooling measures should be taken. If there is a vibration source, stay away from the source or add anti-vibration measures. (2) The regulating valve should generally be installed vertically. It can be tilted under special circumstances. For example, if the tilt angle is large and the weight of the valve itself is too large, supporting parts should be added to protect the valve. (3) When installing a regulating valve, the pipeline should generally not be too high from the surface or board. When the pipeline height is greater than 2m, a platform should be set up as much as possible to facilitate the operation of the handwheel and facilitate maintenance. (4) Before installing the electric control valve, the pipeline should be cleaned to remove dirt and welding slag. After installation, in order to ensure that no impurities remain in the valve body, the valves should be cleaned again, that is, all valves should be opened when the medium is introduced to prevent impurities from getting stuck. After using the handwheel mechanism, it should be restored to its original neutral position. (5) To enable the production process to continue when the electric regulating valve fails or is repaired, a bypass pipeline should be added to the regulating valve.