The cross section of the ball has the following properties:
The 1 line center and the center of the cross section perpendicular to the cross section.
2 center to the relationship between the radius of R radius R and the cross section of the distance between D and the ball are the following: r^2=R^2-d^2 is through the center of the spherical plane truncated by the circle is called big circle, is not through the center of the section of the circle is called round. On the sphere, the shortest line between two points is the length of the circle is through these two points between the two a minor arc length, we put the arc length is called spherical distance two points.
We know that the main characteristics of ball valve itself is compact, easy operation and maintenance for water, solvents, acids, and natural gas general working media, but also applies to poor working conditions of media, such as oxygen, hydrogen peroxide, methane and ethylene. Ball valve body can be integrated, can also be a combination of.
Ball valve nominal pressure rating (PN), indicating that the valve in the normal temperature state of the maximum working pressure. For example: PN4.0, indicating that the operating temperature at -290C ~ 380C maximum working pressure of 40 Bar (4.0MPa).
The ball valve plate showing the maximum operating pressure ball valve to allow the maximum and minimum operating temperature.
