Cross section and radius of valve sphere
The main characteristics of valve ball are compact structure, easy operation and maintenance. Suitable for general working media such as water, solvents, acids, and natural gas, as well as media with poor working conditions such as oxygen, hydrogen peroxide, methane, and ethylene. Next, let Junda editor introduce the cross-section and radius of the valve ball to you!
The rated pressure (PN) of the valve ball can indicate the maximum working pressure of the valve at room temperature. For example, PN4.0 represents a working pressure of 40 Bar (4.0MPa) when the operating temperature is between -290C and 380C. The valve ball nameplate shows the maximum allowable working pressure of the valve ball at the highest and lowest operating temperatures. The valve ball can be integral or combined.
The line connecting the center of the sphere and the center of the cross-section is perpendicular to the cross-section. The distance d from the center to the cross-section is related to the radius r of the sphere and the radius r of the cross-section as follows: r2=r2- d2. A circle that is cut through a plane passing through the center of a sphere is called a large circle, and a circle that is cut through a section that does not pass through the center of the sphere is called a small circle. On a sphere, the length of the extremely short line connecting two points is the length of a bad arc between the two points, which is called the spherical distance between the two points.
