Characteristics of ball valve

Ball valve (ball valve ), opening and closing parts (ball) driven by the valve stem, and around the axis of the ball valve for rotating movement of the valve. Can also be used for fluid regulation and control, including hard seal V-shaped ball valve of its V-shaped ball core and hard alloy surfacing metal valve seat has a strong shear force, especially suitable for containing fiber, small solid particles and other media. The multi-way ball valve in the pipeline can not only flexibly control the convergence of media, diversion, and flow switching, but also can close any channel to connect the other two channels. This type of valve in the pipeline should generally be installed horizontally. Ball valve according to the driving mode is divided into: pneumatic ball valve, electric ball valve, manual ball valve.

Features:

The 1. is wear-resistant; because the valve core of the hard seal ball valve is alloy steel spray welding, and the sealing ring is alloy steel surfacing welding, the hard seal ball valve will not produce too much wear when switching. (Its hardness coefficient is 65-70)

2. sealing performance is good; due to the hard seal ball valve is the use of artificial grinding, until the valve core and seal ring completely consistent to use. So his sealing performance is reliable.

The 3. switch is light; because the sealing ring of the hard seal ball valve uses a spring at the bottom to hold the sealing ring tightly with the valve core, the switch is very light when the external force exceeds the preload of the spring.

Long service life of the 4.: it has been widely used in petroleum, chemical industry, power generation, papermaking, atomic energy, aviation, rockets and other departments, as well as people's daily life.

Pneumatic ball valve structure is simple and compact, reliable sealing, easy maintenance, sealing surface and spherical often closed state, not easy to be medium erosion, easy operation and maintenance, suitable for water, solvent, acid and natural gas and other general working medium, mainly used to cut off or connected to the pipeline in the medium, can also be used for fluid regulation and control.

Pneumatic ball valve compared with other types of valves, with angular stroke output torque, open quickly, stable and reliable, widely applicable, as well as the following advantages:

1. The thrust bearing reduces the friction torque of the valve stem, which can make the long-term operation of the valve stem stable and flexible.

2. Anti-static function: a spring is set between the ball, valve stem and valve body, which can export the static electricity generated during the switching process.

3, due to PTFE and other materials have good self lubrication, and the ball friction loss is small, so the service life of pneumatic ball valve is long.

4, the fluid resistance is small: pneumatic ball valve is the smallest fluid resistance of all valve classification, even if the diameter of the pneumatic ball valve, the fluid resistance is quite small.

5, the valve stem seal is reliable: because the valve stem only for rotating movement and do not do lifting movement, the valve stem packing seal is not easy to damage, and the sealing capacity increases with the increase of medium pressure.

6, the valve seat sealing performance is good: the use of PTFE and other elastic materials made of sealing ring, the structure is easy to seal, and the valve sealing capacity of pneumatic ball valve increases with the increase of medium pressure.

7, the fluid resistance is small, the full diameter of the ball valve basically no flow resistance.

8. Simple structure, small size and light weight.

9, tight and reliable. It has two sealing surfaces, and the ball valve sealing surface material widely used in various plastics, good sealing, can achieve complete sealing. It has also been widely used in vacuum systems.

10, easy to operate, open and close quickly, from full open to full close as long as the rotation of 90 °, easy to remote control.

11, easy maintenance, ball valve structure is simple, the seal ring is generally active, disassembly and replacement are more convenient.

12. When fully open or fully closed, the sealing surface of the ball and the valve seat is isolated from the medium. When the medium passes, it will not cause erosion of the valve sealing surface.

13, a wide range of applications, diameter from small to a few millimeters, large to a few meters, from high vacuum to high pressure can be applied.

14, because the ball valve in the opening and closing process has a wipe, so it can be used with suspended solid particles in the medium.

15. The processing precision is high, the cost is expensive, and it is not suitable for use at high temperatures. If there are impurities in the pipeline, it is easy to be blocked by impurities, causing the valve to fail to open.