Stainless steel sanitary square manhole

 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, and the sealing performance is good, and it has been widely used in the vacuum system. 

4. It is easy to operate and open and close quickly. It only needs to rotate 90° from fully open to fully closed, which is convenient for remote control. 

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

6. When fully open or fully closed, the sealing surface of the ball and valve seat is isolated from the medium. When the medium passes through, Will not cause erosion of the valve sealing surface. 

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. 

8. When the ball rotates 90 degrees, it should show a spherical surface at the entrance and exit, so as to cut off the flow. Different materials are used, which can be applied to water, steam, oil, nitric acid, light industry, food, medicine, environmental protection. It is widely used in petroleum, chemical industry, metallurgy, electric power, and many other media.