The advantage of 1PC investment casting ball valve:
 
1. Hydraulic resistance is small and its resistance coefficient is equal with the same length of the section
2. Construction is simple, volume is small and weight is light.
3. It's compact and reliable. The sealing surface materials of ball valve widely adopt plastics and leakproofness is good. It's widely used in vacuum plant.
4. Easy operation. It's quickly to open and close. Only need to rotate 90 degree to all off from all on and it's convenient to long-distance control.
5. Easy maintenance. The structure of ball valve is simple. Seal ring is mobile generally and it's convenient to dismount and change.
6. When open and close the ball valve, the sealing face and medium of sphere and clack seat is isolate.
7. It's widely used. Diameter range is from millimeter to meter and application from high vacuum to heavy pressure. 

The working principle of 1PC investment casting ball valve is to keep the valve open and occlusion by rotary valve. Ball valve switch is light, size is small and can make it big caliber, sealing is reliable, structure is simple and it's convenient to maintenance. It's widely used in various industries.