Principle and characteristics of stainless steel card sleeve ball valve

Principle of stainless steel card sleeve ball valve

The ferrule type ball valve is mainly composed of a ferrule with a 24-degree tapered hole and a ferrule with a sharp inner blade and a compression nut for compression. When the nut is tightened, the ferrule is pushed into the 24-degree taper hole and deformed accordingly, so that the ferrule and the conical surface of the joint body form a spherical contact seal; at the same time, the inner cutting edge of the ferrule is embedded in the outer wall of the steel pipe and pressed out on the outer wall. A circular groove, which plays a role of sealing. It is better to choose stress-annealed 20# fine drawn pipe for steel pipe, which will help the inner blade of the ferrule to be embedded in the outer surface of the steel pipe, and play a role of sealing. The card sleeve ball valve is suitable for the opening and closing device of the medium and small diameter pipelines under various pressures, temperatures and media. The pressure and the diameter are subject to certain restrictions. The 90° transmission is adopted, so the switch is convenient and fast, and it can be opened and closed quickly.

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Features of stainless steel card sleeve ball valve

1. The ball valve channel is flat and smooth, which is convenient for pipeline sweeping and cleaning, and can transport media such as slurry and solid particles.

2. Using PTFE (Teflon) and other materials as the seal, it has good lubricity and elasticity, small friction with the sphere, and long service life.

3. Open and close quickly, only need to rotate the sphere 90° when opening and closing, which is convenient and fast.

4. The fluid resistance of the ball valve is small. When the ball channel is fully opened, the cross-sectional area of the ball channel, the valve body channel and the connecting pipe are equal, and they are in a straight line. The medium flows through the ball valve, which is equivalent to flowing through a straight-through pipe. The fluid resistance of the ball valve is small. 

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