The plastic ball valve evolved from the plug valve. Its opening and closing part is a sphere, which uses the sphere to rotate 90 degrees around the axis of the valve stem to achieve the purpose of opening and closing. Plastic ball valve is suitable for the interception of the transportation process with corrosive medium. According to different materials, the working temperature is PVC 0℃～50℃, C-PVC 0℃～90℃, PP -20℃～100℃, PVDF -20℃～100℃ . The plastic ball valve has excellent corrosion resistance. The sealing ring adopts EPDM and FKM; it has excellent corrosion resistance and prolongs the service life. Flexible rotation and easy to use. Plastic ball valve The integral ball valve has few leakage points, high strength, and the connection type ball valve is easy to assemble and disassemble.

Plastic ball valve is not only simple in structure, good in sealing performance, but also small in size, light in weight, low in material consumption, small in installation size, and small in driving torque within a certain nominal diameter range. It is simple to operate and easy to achieve rapid opening and closing. One of the fastest growing valve varieties in the past ten years. Especially in developed countries such as the United States, Japan, Germany, France, Italy, West, and Britain, the use of ball valves is very extensive, and the variety and quantity used are still expanding.

The working principle of the plastic ball valve is to make the valve unblocked or blocked by rotating the valve stem. The switch is portable, small in size, reliable in sealing, simple in structure and convenient in maintenance. The sealing surface and spherical surface are often in a closed state and are not easily eroded by the medium. It is widely used in various industries.

The ball valve is a new type of valve that has been 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 a pipe section of the same length.

2. Simple structure, small size and light weight.

3. It is tight and reliable. At present, the sealing surface material of the ball valve is widely used in plastics with good sealing performance, and it has also been widely used in vacuum systems.

4. Convenient operation, rapid opening and closing, only need to rotate 90° from fully open to fully closed, which is convenient for remote control.

5. Convenient maintenance, simple structure of the ball valve, the sealing ring is generally movable, it is convenient to disassemble and replace.

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 will not cause erosion of the valve sealing surface when the medium passes.

7. It has a wide range of applications, with a diameter ranging from a few millimeters to a few meters, and can be applied from high vacuum to high pressure.