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An Overview of Conventional Valve

Source:http://www.flowxgroup.comUpdate Time:2014-10-21Hits:

For conventional valve user, we must know that conventional valve is made up of cock. It has the same rotate 90 degrees to action; one special aspect is that the cock body is pneumatic actuators, with a round hole or channel through its axis. Spherical and opening ratio should be at a fixed way that is when the ball rotates 90 degrees, in the inlet and outlet should be completely present spherical, thereby blocking flow.

Full equality of the valve body cavity offers very small, straight flow channel for medium resistance. Usually we think conventional valve is more suitable for direct open and close than electric actuators, but recent development has put a conventional valve designed to make it with throttling and control flow. The main characteristics of conventional valve itself are it has compact construction, making it easy operation and maintenance, and it is applicable to water, solvent, acid and gas, such general work medium, but also is suitable for the bad working conditions of media. Conventional valve body can be a whole, also can be combined.

As conventional valve user, we must know conventional valve working principle and practical effect.


The working principle of conventional valve is by rotary valve to keep the valve open or occlusion. Conventional valve switch has lightweight, small size, we can make it big caliber, its spherical are often in the closed state, so that it will not easily to cause medium erosion, so it has been widely used in various industries.


As conventional valve user, we must know that conventional valve and plug valve are belong to the same type of valve, but the difference is that its closure is a ball, the ball around the center line of the body as a rotation to achieve a kind of open and close action.

As conventional valve user, we must know that conventional valve is mainly used for cut and change the flow direction of medium. Conventional valve has been widely used in recent years as a new kind of valve, it has the following advantages:

1. The fluid resistance is small; its resistance coefficient is equal with section of equal length.

2. Simple structure, small volume, light weight.

3. Easy to operate, open and close quickly, from open to close, we just rotate 90 °; it is easy for the remote control.

4. Easy maintenance, simple structure of electric actuators, sealing ring is always active, which making generally removing replacement is more convenient than electric actuators.

5. In the fully open or fully closed period, the ball and seat sealing surface and the dielectric are isolates, while medium goes through, it cannot cause the valve sealing surface erosion.

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