The Check Valve is a closed or cylindrical rotary valve. It is a type of Universal Valve that is connected to or separated from the channel port on the valve body by rotating 90 degrees. Check Valve can be cylindrical or conical in shape. For cylindrical Universal Valve, the passage is usually rectangular. In a cone valve plug, the passage is trapezoidal. These shapes lighten the structure of the Check Valve. It is most suitable as a cutting and connecting medium and for diverting flow, but it can also be used for throttling depending on the applicable properties and the impact resistance of the sealing surface.
The Check Valve is a quick-switching straight-way valve. Due to the wiping effect of the movement between the rotating sealing surfaces, it can completely prevent contact with the flowing medium when fully open. Therefore, it is generally used in media with floating particles. Another important feature is the ease of adaptability to multi-channel configurations, allowing one valve to obtain two, three or four different flow paths.
Working principle: A Universal Valve using a plug with a through hole as an opening and closing component. The plug body rotates according to the valve rod to realize the switching action. The plug body of the Check Valve is mostly a cone, which cooperates with the conical hole surface of the valve body to form a sealing pair. The Check Valve uses the fastest Universal Valve. It has simple structure, fast switching and small fluid resistance.
1. The Check Valve is used for frequent operations and can be opened and closed quickly and easily.
2. The Check Valve has small fluid resistance.
3. The Check Valve has a simple structure, is relatively small in size, light in weight, and easy to maintain.
4. Good sealing performance.
5. It is not restricted by the installation direction, and the flow direction of the medium can be arbitrary.
6. No vibration and low noise.
Check Valve are classified according to their uses: soft seal Check Valve, oil lubricated hard seal Check Valve, lift Check Valve, three-way and four-way Check Valve.
Among them, soft-sealed Check Valve are often used in harsh environments such as corrosive, highly toxic and highly hazardous media, where leakage is strictly prohibited, and where the material of the Universal Valve will not pollute the medium. The inlet and outlet window design of the valve body and the double-channel groove sealing ring structure. During the rotation of the cock, the sealing specific pressure between the sealing pairs gradually changes until it reaches the fully open or fully closed position, generating sufficient sealing specific pressure. , the sealing pair reaches zero leakage. Suitable for highly scourable gas-solid, liquid-solid phase media.
