Elastic ball pneumatic pneumatic ball valve The ball of pneumatic pneumatic ball valve is elastic. The ball and valve seat seal ring are made of metal materials, and the sealing pressure is very high. The pressure of the medium itself cannot meet the sealing requirements, so external force must be applied. This valve is suitable for high temperature and high pressure media. An elastic sphere obtains elasticity by opening an elastic groove at the lower end of the inner wall of the sphere. When closing the channel, use the wedge head of the valve rod to expand the ball and compress the valve seat to seal. Loosen the wedge head before rotating the ball, and the ball will return to its original shape, so that there is a small gap between the ball and the valve seat, which can reduce the friction and operating torque of the sealing surface. Pneumatic pneumatic ball valves can be divided into straight, three-way and right angle types according to their channel positions. The last two pneumatic ball valves are used to distribute media and change the flow direction of media.

How to distinguish the authenticity of metal conduit
Metal conduit is usually used on the wall or under the water body and road surface of buildings, and sometimes it is also required to be used in the environment with electromagnetic field or strong acid, strong alkali, high corrosivity and even explosion risk. This determines that the metal conduit used for installing wires and communication lines needs to have the following basic properties:
1. Higher pressure is acceptable;
2. It has certain moisture-proof and anti-corrosion performance;
3. The metal material on the surface shall have sufficient toughness;
4. It can resist magnetic field interference, and prevent wires and communication lines from receiving interference from external magnetic fields or power plants.
As the metal threading pipe has brought many conveniences to our consumption life, it has also been well developed and widely used in the market. However, fake and inferior products also follow, and distinguishing between genuine and fake products has become a problem that we have to pay attention to.