What are the performance of electric valves What are the advantages and disadvantages of electric va

Here are some of the well-known brands recognized in the valve industry, which are widely recognized and have a high reputation. While rankings may vary depending on time and market conditions, the following brands are generally considered to be among the top brands in the valve industry:

The following influential first-line brands of water system valves and industrial valves can be used as a reference, but for reference only: Suzhou Neway Valve, Shanghai Guanlong Valve, Shanghai Qizhong Valve, Sanhua, Su Yan, Shentong, Su Valve, Nanfang, Jiang.

First, the word Yao. The above manufacturers are only estimates and references, and the specific situation may vary or fluctuate at any time due to changes in a series of factors such as changes in the market, the size of the competition pattern, and the stability of product quality. As an indispensable key device in industrial production and civil facilities, the quality and reputation of the valve brand directly affect the satisfaction and trust of users.

These brands are known in the valve industry for their innovative technology, high-quality products and reliability. It is important to note that the market and industry are evolving rapidly, and different rankings may vary depending on time and region. For the most up-to-date ranking information, it is recommended to refer to industry reports, professional organizations or market research data for more detailed and accurate information.

The electric valve action distance is larger than that of ordinary valves, the electric valve opening and closing speed can be adjusted, the structure is simple, easy to maintain, and can be used to control the flow of various types of fluids such as air, water, steam, various corrosive media, mud, oil, liquid metal and radioactive media.

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Due to the cushioning characteristics of the gas itself, it is not easy to be damaged by jamming during operation, but there must be a gas source, and its control system is more complex than that of an electric valve. This type of valve should generally be installed horizontally in the pipeline.

Electric valves. Valve electric actuators are mainly used in power plants or nuclear power plants, where a smooth, stable and slow process is required in high-pressure water systems.

The main advantage of the electric actuator is a high degree of stability and the constant thrust that can be applied by the user, the anti-deviation ability of the electric actuator is very good, and the output thrust or torque is basically constant, which can overcome the unbalanced force of the medium well and achieve accurate control of the process parameters, so the control accuracy is higher than that of the pneumatic actuator. If the servo amplifier is used, it is easy to realize the exchange of positive and negative actions, and it is also easy to set the state of the valve position of the broken signal (keep it fully open and all closed), and when it fails, it must stay in place, which is not done by the pneumatic actuator, and the pneumatic actuator must be maintained with the help of a set of combined protection systems.

The main disadvantages of electric actuators are: the structure is more complex, more prone to failure, and due to its complexity, the technical requirements for on-site maintenance personnel are relatively high; If the motor is adjusted too frequently, it is easy to cause the motor to overheat, produce thermal protection, and also increase the wear of the reduction gear; In addition, it is slower, and it takes a long time from the time the regulator outputs a signal to the time when the regulator responds and moves to that corresponding position.

The power of the electric valve refers to the power emptying rate of the motor equipped with the electric actuator on the valve.

Electric valves are made with electric actuators. Control the valve, so that the valve can be opened and closed. It can be divided into two parts, the upper part is the electric actuator, and the lower part is the valve. Simulated action and pressure test should be carried out before the installation of electric valves.

Advantages: Good effect on liquid media and large diameter gases, not affected by climate. It is not affected by the pressure of air compressor.

Disadvantages: high cost, not good in humid environment.

When the pneumatic valve enters the middle cavity between the two pistons of the cylinder from the air source, the two pistons are separated and move to the direction of both ends of the cylinder, and the air of the air cavity at both ends is discharged through the other air port, and the two piston racks are synchronously driven to rotate the output shaft (gear) in the counterclockwise direction. Make the valve open and close The electric valve controls the valve body through the power supply, and the hydraulic valve passes the hydraulic oil as above.

The medium fluid of pneumatic valve and hydraulic valve is different, the general medium of pneumatic is compressed air, and the fluid of hydraulic pressure is hydraulic oil. What do you mean by electric valves? Both pneumatic and hydraulic have valves that are solenoid-actuated.

1.Pneumatic drive: simple structure, easy to obtain air source, fast switching speed, governor can be installed, so that the switching speed can be adjusted according to needs, gas compressibility is large, elasticity when closing, etc.

2.Electric drive: strong applicability, not affected by ambient temperature, large output torque range, easy control, ultra-miniaturization, easy installation and maintenance, etc.

All in all, pneumatic valves and electric valves have different driving methods, and the driving valve operation methods are generally manual, electric, electromagnetic, pneumatic or hydraulic, electrical linkage or electro-hydraulic linkage, etc.

The pneumatic valve is opened by compressed air, and the electric valve is opened by power (220V, 380V).

The advantages of pneumatic ball valves are: the switch is lightweight, the volume source is small, and it can be made.

Large caliber, reliable sealing, simple structure, easy maintenance, not easy to be eroded by the medium. Disadvantages: In the northern winter, it is easy to be affected by the water content of the air compressor, which causes the transmission part to freeze and not operate.

Advantages of electric ball valve: good effect on liquid medium and large-diameter gas, not affected by climate, not affected by the pressure of air compressed air. Disadvantages: high cost, not good in humid environment.

The electric valve is in.

BAI will have more advantages in the selection, because DU can be used in the indoor field, and the starting valve must be used in the special.

In the environment where there is a gas source. The performance of the electric valve will be higher than that of the pneumatic one, after all, it relies on the motor to drive the valve, so its torque will be greater. This can adapt to more working conditions, and at the same time, the electric valve is no longer limited to the angle stroke of the valve type, but can be used for the gate valve, globe valve and other linear stroke valves.

The service and quality of Wickon Valve are the best in the valve, and you can refer to their valves to choose when you have more choices. As for which kind of valve to choose, it depends on your own working conditions, or depends on your own habits, if you are accustomed to using ball valves or butterfly valves, this kind of angular stroke, and then replace you with a straight stroke gate valve or globe valve, you may not meet your own working conditions, or you are not used to it. This choice is also to be analyzed on a case-by-case basis.