1; wear-resisting; Due to the fact that the valve core of the hard sealed ball valve is alloy steel spray welded, and the sealing ring is alloy steel overlay welded, the hard sealed ball valve will not generate too much wear during opening and closing. (Its hardness coefficient is 65-70):

2; Good sealing performance; As the sealing of hard sealed ball valves is manual grinding, they cannot be used until the valve core and sealing ring completely match. Therefore, its sealing performance is reliable.

3; Light switch; As the bottom of the sealing ring of a hard sealed ball valve uses a spring to tightly hold the sealing ring and valve core together, the switch is very light when external forces exceed the preload of the spring.

4; Long service life: It has been widely used in various departments such as petroleum, chemical industry, power generation, paper making, atomic energy, aviation, rockets, and people's daily lives.

Pneumatic ball valves have a compact structure, reliable sealing, simple structure, and convenient maintenance. The sealing surface and spherical surface are often in a closed state, and are not easily eroded by media. They are easy to operate and maintain. They are suitable for general working media such as water, solvents, acids, and natural gas. They are mainly used to cut off or connect media in pipelines, and can also be used for fluid regulation and control.

Compared with other valve types, pneumatic ball valves have the following advantages: angular stroke output torque, rapid opening, stable and reliable operation, and wide application.

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

2. Anti static function: A spring is installed between the ball, valve rod, and valve body, which can export the static electricity generated during the switching process.

3. Due to the good self-lubrication of materials such as polytetrafluoroethylene and low friction loss with the ball, the service life of pneumatic ball valves is long.

4. Low fluid resistance: Pneumatic ball valves have the smallest fluid resistance among all valve classifications, even for reduced diameter pneumatic ball valves, their fluid resistance is relatively small.

5. Reliable sealing of the valve rod: As the valve rod only rotates without lifting, the packing seal of the valve rod is not easily damaged, and the sealing ability increases with the pressure of the medium.

6. Good sealing performance of valve seat: The sealing ring made of elastic materials such as polytetrafluoroethylene is easy to seal in structure, and the sealing ability of pneumatic ball valves increases with the increase of medium pressure.

advantage

1. Low fluid resistance, with almost no flow resistance for full bore ball valves.

2. Simple structure, small size, and light weight.

3. 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 performance and can achieve complete sealing. It has also been widely used in vacuum systems.

4. Convenient operation, quick opening and closing, with only 90 ° rotation from full opening to full closing, facilitating remote control.

5. Convenient maintenance, simple ball valve structure, generally movable sealing rings, and convenient disassembly and replacement.

6. When fully open or fully closed, the sealing surfaces of the ball and valve seat are isolated from the medium, and when the medium passes through, it will not cause erosion of the valve sealing surface.

7. Wide range of applications, ranging from small to a few millimeters in diameter to several meters in diameter, from high vacuum to high pressure applications.

Due to the wiping property of ball valves during opening and closing, they can be used in media with suspended solid particles.

High machining accuracy, high cost, and unsuitable for use in high temperatures. If there are impurities in the pipeline, they can easily be blocked by impurities, resulting in the valve being unable to open.