First, wear resistance; Because the valve core of the hard sealing ball valve is alloy steel spray welding, the sealing ring is alloy steel surfacing, so the hard sealing ball valve will not produce too much wear when it is on and off.

Two, good sealing performance; Because the seal of the hard sealing ball valve is manually ground, it can not be used until the valve core is completely consistent with the sealing ring. So his sealing performance is reliable.

Three, light switch; Because the bottom of the sealing ring of the hard sealing ball valve adopts a spring to tightly hold the sealing ring and the valve core together, so the switch is very light when the external force exceeds the pre-tightening force of the spring.

Four, long service life: 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 has the advantages of simple and compact structure, reliable sealing, convenient maintenance, sealing surface and spherical surface are often in closed state, not easy to be eroded by the medium, easy to operate and maintain, suitable for water, solvent, acid and natural gas and other general working medium, mainly used for cutting off or connecting the medium in the pipeline, can also be used for fluid regulation and control.

Compared with other kinds of valves, pneumatic ball valves have angular stroke output torque, rapid opening, stable and reliable, wide application, as well as the following advantages:

1. The thrust bearing reduces the friction torque of the stem, which can make the stem operate smoothly and flexiblyfor a long time.

2, anti-static function: spring is arranged between the ball, the valve stem and the valve body, which can export the static electricity generated in the process of switching.

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

4, fluid resistance is small: pneumatic ball valve is one of the least fluid resistance in all valve classification, even if it is reduced diameter pneumatic ball valve, its fluid resistance is quite small.

5. Stem sealing is reliable: because the stem is only rotating and does not do lifting movement, the packing seal of the stem is not easy to destroy, and the sealing ability increases with the increase of the medium pressure.

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

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

8, simple structure, small volume, light weight.

9, tight and reliable. It has two sealing surface, and the sealing surface material of the ball valve is widely used in a variety of plastics, good tightness, 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°, 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 valve seat is isolated from the medium. When the medium passes, it will not cause the erosion of the sealing surface of the valve.

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

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

15, high processing accuracy, high 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.