Three-piece overview:

The three-piece ball valve and the gate valve belong to the same type of valve, the difference in which the closure is a sphere, the sphere around the center of the valve body for rotation to achieve open, close a valve. Ball valves are mainly used in piping to cut, distribute and change the flow direction of the media. Three-piece ball valve is widely used in recent years, a new type of valve.

advantage:

Three-piece ball valve has the following advantages:

1. The fluid resistance is small and the drag coefficient is equal to the pipe length of the same length.

2. Simple structure, small size, light weight.

3. Close and reliable, ball valve sealing surface material widely used plastic, good sealing, in the vacuum system has also been widely used.

4. Easy to operate, open and close quickly, from full open to full clearance as long as the rotation 90 °, easy to remote control.

5. Easy maintenance, ball valve structure is simple, the seals are generally active, demolition and replacement are more convenient.

6. When fully open or fully closed, the ball and the valve seat sealing surface and the media isolation, the media through, will not cause the valve sealing surface erosion.

7. Applicable to a wide range of diameter from small to a few millimeters, large to a few meters, from high vacuum to high pressure can be applied. Flange ball valve, flange gate valve, knife gate valve