What are the characteristics of ball valves?
Update time：2023.06.15 Views：440
Features of the ball valve:
First, wear resistance; because the valve core of the hard sealing valve is alloy steel spray welding, the sealing ring is alloy steel pile welding, so the hard -dense ball valve will not cause too much wear when switching. (Its hardness coefficient is 65-70):
Second, the sealing performance is good; because the sealing of the hard sealing valve is artificial grinding, it can not be used until the valve core and the sealing ring are fully matched. So his sealing performance is reliable.
Third, the switch is light; because the bottom of the sealing ring of the hard sealing valve uses a spring to hold the sealing ring tightly with the valve core, the switch is very light when the external force exceeds the pre -tightening force of the spring.
Fourth, long service life: It has been widely used in various departments such as petroleum, chemical industry, power generation, papermaking, atomic energy, aviation, rockets and other departments, as well as people's daily life.
The structure of the pneumatic ball valve is simple and compact, reliable, and convenient for maintenance. The sealing and sphere are often closed. It is not easy to be eroded by the medium. It is easy to operate and repair. It is suitable for general working media such as water, solvents, acid and natural gas. Or the medium in the pipeline can also be used for fluid regulation and control.
Compared with other types of valves, the pneumatic ball valve has corner stroke output torque, which is fast, stable and reliable, widely applicable, and the following advantages:
1. Stop push bearing to reduce the friction torque of valve stems, which can make the long -term operation of the valve stem smooth and flexible.
2. Anti -static function: Setting a spring between the sphere, the valve stem, and the valve body can export the static electricity generated during the switch.
3. Because the materials such as polyterafluoroethylene have good self -lubricating properties and the friction loss of the sphere is small, the service life of the gas ball valve is long.
4. Small fluid resistance: The pneumatic ball valve is the smallest resistance of all valve classification in the medium fluorida. Even if it is a diameter -induced permeable ball valve, its fluid resistance is quite small.
5. Reliable valve stem sealing: Because the valve stems are only rotating and not for lifting movements, the filling of the valve stems is not easy to destroy, and the sealing capacity increases with the increase of the medium pressure.
6. Good sealing performance of the valve seat: The sealing ring made of elastic materials such as polytetrafluoroethylene is easy to seal, and the valve seal ability of the pneumatic ball valve increases with the increase of the media pressure.
7. The fluid resistance is small, and the full -diameter ball valve basically does not have current resistance.
8. Simple structure, small size, light weight.
9. Tight and reliable. It has two seals, and the cover materials of the ball valve are widely used in various plastics. They have good sealing and can be fully sealed. It has also been widely used in vacuum systems.
10. It is convenient to operate and quickly and close. From full opening to full level, it only needs to rotate 90 ° to facilitate long -distance control.
11. Easy maintenance, simple structure of the ball valve, sealing circle is generally active, and it is more convenient for disassembly and replacement.
12. When open or fully closed, the cover of the sphere and the valve seat is isolated from the medium. When the medium passes, it will not cause the erosion of the valve cover.
13. The scope of applications is wide. The diameter can be applied from high to a few meters. It can be applied from high vacuum to high pressure.
14. Because the ball valve is wiped in the process of opening and closing, it can be used in the medium with suspended solid particles.
15. High processing accuracy, expensive cost, and inability to use in high temperatures. If impurities in the pipeline have impurities, they are easily blocked by impurities, causing the valve to be unable to open.
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