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What are the different types of control valves
The control valve consists of the valve body assembly and the actuator (or the actuator system). It is divided into four series of single-seated, double-seated, sleeve and self-operated control valves. Variants of the four types of valves can lead to many different applicable configurations, each has specific applications and strengths and weaknesses. There are many types of valve bodies for control valves. Commonly used are straight-through single-seat, straight-through double-seat, angle, diaphragm, small flow, tee, eccentric rotation, butterfly, sleeve, spherical, etc. When making choices, consider the following:
1. It is mainly considered according to the selected flow characteristics and unbalanced forces.
2. When the fluid medium is a suspension containing a high concentration of abrasive particles, the internal material of the valve should be hard.
3. Since the medium is corrosive, it needs to consider selecting corrosion-resistant material valves.
4. When the temperature and pressure of the medium are high and the change is large, the valve core and valve seat material should be selected with small changes in temperature and pressure.
5. Flash evaporation and cavitation only occur in liquid media. In the actual production process, flashing and cavitation will form vibration and noise, which will shorten the service life of the valves. Therefore, the valves should be prevented from flashing and cavitation.
1. It is mainly considered according to the selected flow characteristics and unbalanced forces.
2. When the fluid medium is a suspension containing a high concentration of abrasive particles, the internal material of the valve should be hard.
3. Since the medium is corrosive, it needs to consider selecting corrosion-resistant material valves.
4. When the temperature and pressure of the medium are high and the change is large, the valve core and valve seat material should be selected with small changes in temperature and pressure.
5. Flash evaporation and cavitation only occur in liquid media. In the actual production process, flashing and cavitation will form vibration and noise, which will shorten the service life of the valves. Therefore, the valves should be prevented from flashing and cavitation.
