How To Choose A Ball Valve? What Are The Advantages And Disadvantages Of A Ball Valve?

The ball valve in the pipeline is mainly used for cutting off. The ball valve designed with a V-shaped opening also has a good flow regulation function.

The opening and closing parts of Lined Ball Valve are spheres, which rotate 90 degrees around the valve stem axis to achieve the purpose of opening and closing. The ball valve has low flow resistance, simple structure, small size, light weight, good sealing, easy operation, fast switching, and convenient remote control. It is suitable for switching and using a cut-off valve.

1. Nominal pressure or pressure level: PN1.0-32.0MPa. ANSICLASS150-900. JIS10-20K;

2. Nominal diameter or caliber: DN6~900. NPS1/4~36;

3. Connection method: flange, butt welding, thread, socket welding, etc.;

4. Applicable temperature: -196℃~540℃;

5. Drive mode: manual, worm gear transmission, pneumatic, electric, hydraulic, gas-liquid linkage, electric-hydraulic linkage;

6. Valve body material: WCB. ZG1Cr18Ni9Ti. ZG1Cr18Ni12Mo2Ti. CF8(304). CF3(304L). CF8M(316). CF3M(316L). Ti. Different materials can be used for water, steam, oil, nitric acid, acetic acid, oxidizing medium, urea and other media.

Advantages of ball valve:

1. Lowest flow resistance (actually 0).

2. Reliably used in corrosive media and low-boiling liquids because it will not get stuck during operation (without lubricant).

3. Complete sealing can be achieved within a large pressure and temperature range.

4. Rapid opening and closing can be achieved, and the opening and closing time of some structures is only 0.05~0.1s, ensuring that it can be used in the automation system of the test bench. When the valve is opened and closed quickly, the operation is impact-free.

5. The spherical closing piece can be automatically positioned at the boundary position.

6. The double-sided working medium seal is reliable.

7. When fully open and fully closed, the sealing surface of the ball and the valve seat is isolated from the medium, so the medium passing through the valve at high speed will not cause erosion of the sealing surface.

8. The structure is compact and light, which can be considered as a reasonable valve structure for low-temperature medium systems.

9. The valve body is symmetrical, especially the welded valve body structure, which can well withstand the stress of the pipeline.

10. The closing piece can withstand the high pressure difference when closed.

11. The ball valve with fully welded body can be buried directly in the ground, so that the internal parts of the valve are not corroded, and the maximum service life can reach 30 years. .An ideal valve for natural gas pipelines.