The ball valve has simple structure, it is small and light. And now in many fields, it is also used, ranging from a few millimeters to a few meters in diameter, from high vacuum to high pressure.
As one of the ball valves, what are the characteristics of the manual ball valve?
- 1. Wear resistance: the valve element base of hard seal ball valve is spray welded by alloy steel, so is the sealing ring. Therefore, the hard seal ball valve will not cause too much wear when opening and closing.
- 2. Good sealing performance: manual grinding is adopted. It can not be used until the valve core and the sealing ring are completely matched. So its sealing performance is relatively reliable.
- 3. Switch light: the bottom of the sealing ring uses spring as the sealing ring and valve core. Both are tightly held together, so the switch is very light when the external force exceeds the pre tightening force of the spring.
- 4. Long service life: it has been widely used in petroleum, chemical industry, power generation, papermaking, aviation, rocket, atomic energy and other departments, and also in people’s daily life. The pneumatic ball valve is of compact structure, reliable sealing, simple structure and convenient maintenance, and the sealing surface and spherical surface are always in a closed state. Therefore, it is not easy to be eroded by media, and it is easy to operate and maintain. It is more suitable for water, acid, solvent, natural gas and other general working media.
Compared with other kinds of valves, pneumatic ball valve has the following advantages: quick opening, stable and reliable, wide application, etc
- 1. The bearing of the thrust shaft reduces the friction torque of the valve rod, which makes the valve rod stable and flexible during long-term operation.
- 2. Anti static function: a spring is set between the ball body and the valve body, which can lead out the static electricity generated in the process of switching.
- 3. Polytetrafluoroethylene and other materials are of good self-lubricating property, so the friction loss with the ball is small, which also leads to the service life growth of pneumatic ball valve.
- 4. Small fluid resistance: pneumatic ball valve is actually the one with the smallest fluid resistance in all valve classifications. Even if it is a reduced diameter pneumatic ball valve, the fluid resistance is relatively small.
In the above article, you should have learned a lot about the characteristics of manual ball valve after reading. As a professional staff, for these knowledge, you need to remember them, and need to be familiar with them and at the same time use it flexibly.
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