Electric plastic ball valve
August 09, 2021
Electric plastic ball valve is evolved from plug valve. It has the same 90 degree rotation lifting action, except that the cock body is a sphere with a circular through hole or channel through its axis. The ratio of the spherical surface to the channel port should be such that when the ball rotates 90 degrees, all spherical surfaces should appear at the inlet and outlet, so as to cut off the flow.
The electric plastic ball valve can be closed tightly only by rotating 90 degrees and a small rotating torque. The completely equal inner cavity of the valve body provides a very small resistance and straight flow channel for the medium. It is generally considered that the ball valve is most suitable for direct opening and closing, but recent development has designed the ball valve to throttle and control flow. The main feature of the ball valve is its compact structure and easy operation and maintenance. It is suitable for general working media such as water, solvent, acid and natural gas, as well as media with poor working conditions, such as oxygen, hydrogen peroxide, methane and ethylene. The ball valve body can be integral or combined.
Working principle and practical function of electric plastic ball valve
The working principle of ball valve is to make the valve unblocked or blocked by rotating the valve. The ball valve has the advantages of light switch and small volume. It can be made into a large diameter, reliable sealing, simple structure and convenient maintenance. The sealing surface and spherical surface are often closed, which is not easy to be eroded by the medium. It has been widely used in various industries.
What are the practical functions of electric plastic ball valve
Electric plastic ball valve and plug valve belong to the same type of valve. Only its closing part is a ball. The ball rotates around the center line of the valve body to open and close. Ball valve is mainly used to cut off, distribute and change the flow direction of medium in the pipeline. Electric plastic ball valve is a new type of valve widely used in recent years. It has the following advantages:
1. The fluid resistance is small, and its resistance coefficient is equal to that of the pipe section with the same length.
2. Simple structure, small volume and light weight.
3. Tight and reliable. At present, plastic is widely used as the sealing surface material of ball valve, with good sealing performance, and has been widely used in vacuum system.
4. It is easy to operate and open and close quickly. It only needs to rotate 90 ° from full open to full close, which is convenient for remote control.
5. The maintenance is convenient, the structure of the ball valve is simple, the sealing ring is generally movable, and the disassembly and replacement are relatively convenient.
6. When fully open or fully closed, the sealing surface of the ball and valve seat shall be isolated from the medium. When the medium passes through, it will not cause the erosion of the valve sealing surface.
7. It has a wide range of applications, ranging from small to several millimeters and large to several meters. It can be applied from high vacuum to high pressure
