The eccentric hemispherical valve and the flanged gate valve are the same type of valve. The difference is that the closing member is a sphere, and the ball rotates around the center line of the valve body to open and close a valve. The ball valve is mainly used in the pipeline to cut, distribute and change the flow direction of the medium. Two-piece ball valve, three-piece ball valve, is a new type of valve that has been widely used in recent years.
Characteristics
1 The eccentric hemispherical valve is a top-loading structure. The valve installed on the pipeline can be directly inspected and repaired online, which can effectively reduce the parking of the device and reduce the cost.
2 eccentric hemisphere valve is a single seat design. It eliminates the problem that the cavity medium in the valve affects the safety of use due to abnormal boosting.
3 low torque design. The specially designed valve stem can be easily opened and closed with a small handle.
4 open and close without friction. This feature completely solves the problem that the traditional [wiki] valve [/wiki] affects the seal due to friction between the sealing faces.
5 wedge seal structure. The valve is based on the mechanical force provided by the valve stem, and the ball wedge is pressed onto the valve seat to seal, so that the sealing property of the valve is not affected by the change of the pressure difference of the pipeline, and the sealing performance is reliably guaranteed under various working conditions.
6 Self-cleaning structure of the sealing surface of the eccentric hemisphere valve. When the ball is tilted away from the valve seat, the fluid in the pipeline passes through the spherical sealing surface at 360°, which not only eliminates the high-speed fluid scouring on the valve seat, but also washes away the accumulation on the sealing surface to achieve self-cleaning. .
The main purpose
Assign and change the flow direction of the media. Ball valve is a new type of valve widely used, which has the following advantages:
1. The fluid resistance is small, and its resistance coefficient is equal to the pipe length of the same length.
2. The structure is simple, small in size and light in weight.
3. Compact and reliable, the sealing surface material of the ball valve is widely used in plastics and has good sealing properties. It has also been widely used in vacuum systems.
4. The operation is convenient, the opening and closing is rapid, and the rotation is 90° from full opening to full closing, which is convenient for long-distance control.
5. The maintenance is convenient, the ball valve has a simple structure, and 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 the valve seat is isolated from the medium, and the medium does not cause erosion of the sealing surface of the valve.
7. Wide range of applications, from small to a few millimeters, up to a few meters, from high vacuum to high pressure can be applied. When the ball is rotated 90 degrees, all the spheres should appear at the entrance and exit, thus cutting off the flow.
The eccentric hemispherical valve is a relatively new type of ball valve. It has some unique features unique to its structure, such as the switch without friction, the seal is not easy to wear, and the opening and closing torque is small. This reduces the size of the actuators that are supplied. With multi-turn electric actuators, the medium can be adjusted and tightly closed. It is widely used in petroleum, chemical, urban water supply and drainage and other conditions that require strict cutting.
Bluetooth Charger,Wireless Charger,Wireless Speaker Mobile Phone,Portable Charger With Stand,Wireless Bluetooth Charger,10W fast charger for phone
Shenzhen Konchang Electronic Technology Co.,Ltd , https://www.konchangs.com