球阀特点

First, wear-resistant; Because the spool of the hard sealed ball valve is alloy steel spray welding,
The sealing ring is alloy steel surfacing welding, so the hard sealed ball valve will not produce too much wear when switching. (It has a hardness factor of 65-70) :
Second, good sealing performance; Because the seal of the hard seal ball valve is manually ground, it can be used until the spool is completely matched with the seal ring. So his sealing performance is reliable.
3. Light switch; Because the bottom of the sealing ring of the hard sealed ball valve uses a spring to make the sealing ring and the spool tightly held together, the switch is very light when the external force exceeds the preload force of the spring.
4, long service life: has been widely used in petroleum, chemical, power generation, paper making, atomic energy, aviation, rockets and other departments, as well as People's Daily life.
Pneumatic ball valve structure is simple and compact, reliable sealing, convenient maintenance, sealing surface and spherical surface are often in a closed state, not easy to be washed by the medium, easy to operate and maintain, suitable for water, solvents, acids and natural gas and other general working media, mainly used for cutting or connecting the medium in the pipeline, can also be used for fluid regulation and control.
Compared with other types of valves, pneumatic ball valves have angular stroke output torque, rapid opening, stable and reliable, widely applicable, and the following advantages:
1. The thrust bearing reduces the friction torque of the valve stem, which can make the valve stem operate smoothly and flexibly for a long time.
2, anti-static function: set the spring between the ball, valve stem and valve body, which can export the static electricity generated during the switching process.
3, because polytetrafluoroethylene and other materials have good self-lubrication, and the friction loss with the ball is small, so the service life of the pneumatic ball valve is long.
4, small fluid resistance: pneumatic ball valve is one of the least fluid resistance in all valve categories, even if it is a reduced pneumatic ball valve, its fluid resistance is quite small.
5, the valve stem seal is reliable: because the valve stem only for rotating movement without lifting movement, the packing seal of the valve stem is not easy to destroy, and the sealing capacity increases with the increase of the medium pressure.
6, the sealing performance of the seat is good: the sealing ring made of polytetrafluoroethylene and other elastic materials is easy to seal, and the sealing capacity of the pneumatic ball valve increases with the increase of the medium pressure.
7, the fluid resistance is small, the full diameter ball valve basically has no flow resistance.
8, simple structure, small size, light weight.
9. Tight and reliable. It has two sealing surfaces, and the sealing surface material of the ball valve is widely used in various plastics, which has good sealing property and 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 degrees, easy to remote control.
11, easy maintenance, ball valve structure is simple, the sealing 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 seat is isolated from the medium, and the medium will not cause erosion of the sealing surface of the valve when it passes through.
13, wide range of application, small diameter to a few millimeters, large to a few meters, from high vacuum to high pressure can be applied.
14, because the ball valve has wipeability in the opening and closing process, it can be used in the medium with suspended solid particles.
15, high processing precision, expensive cost, high temperature should not be used, such as impurities in the pipeline, easy to be blocked by impurities, resulting in the valve can not be opened.