ball valve manufacturer

Description

The ball valve produced by NSW valve company is a valve composed of a valve body, a valve seat, a ball, a sealing ring, an operating rod and other components. The ball rotates in the valve body to control the flow of the fluid. Ball valves have the advantages of small size, light weight, good sealing performance and easy operation. They are widely used in pipeline systems in industries such as petroleum, chemical, natural gas, electricity, pharmaceuticals, and papermaking. There are two types of ball valves, one is a full-pass ball valve and the other is a throttling ball valve. The ball of the full-pass ball valve passes completely through the pipeline and can completely open or close the pipeline; while the ball of the throttling ball valve has a certain aperture, and the flow can be controlled by rotating the ball, which is used in flow control occasions.

1. Diameter range: ranging from 0.5 inch (DN 15) to 42 inch (48).

2. Working pressure: generally in the range of 0.6MPa to 6.4MPa.

3. Working temperature: generally ranging from -196℃ to 550℃, there are also high temperature, low temperature and corrosion-resistant ball valves with a wider temperature range.

4. Stem position indication: Ball valves usually have standard or optional manual operating levers or electric actuators, and the stem position can be displayed by the stem position indicator.

5. Pressure level: According to the standard, common pressure levels of ball valves are ANSI 150, 300, 600, 900, 1500, 2500, API 6D, API 6A, etc.

6. Port form: Usually there are full-pass type and throttling type, and there are also special port forms such as V-shaped port, spherical port, etc.

7. Pressure bearing method: Commonly used are flange connection, threaded connection, butt welding connection, etc.

8. Power mode: It can be operated manually and electrically, and there are also hydraulic, pneumatic and other methods.

9. Ball valve structure: It consists of a ball, a valve seat, a valve body, a seal, an operating lever, a flange, etc.

10. Sealing structure: There are soft sealing structure, metal sealing structure, elastic sealing structure, etc.

11. Material: The materials of ball valves include cast steel, stainless steel, brass, aluminum alloy, plastic, etc., depending on the application and medium.