Talk About The Classification Of Three Different Structural Forms Of American Standard Ball Valves
The closing part of Ball Valve is a sphere, which is a kind of valve that opens and closes by rotating the sphere around the center line of the valve body.
Kaihao will talk to you about the classification of three different structural forms of American standard ball valves through this article.
American standard ball valves can be divided into floating ball valves, fixed ball valves, and elastic ball valves according to different structural forms.
1. Floating ball valve: that is, the ball is floating.
Under the action of medium pressure, the ball can produce a certain displacement and press tightly on the sealing surface of the outlet end to ensure the sealing of the outlet end.
It has a simple structure and good sealing performance. The disadvantage is that the load of the working medium borne by the ball is all transmitted to the outlet sealing ring, so it is necessary to consider whether the sealing ring material can withstand the working load of the ball medium.
Floating ball valves are suitable for medium and low pressure ball valves.
2. Fixed ball valve: that is, the ball is fixed and will not move under pressure.
The ball valve has a floating valve seat. After being subjected to the pressure of the medium, the valve seat moves, so that the sealing ring is pressed tightly against the ball to ensure the sealing effect.
Fixed ball ball valve is suitable for high-pressure and large-diameter valve ball valves.
3. Elastic ball ball valve: that is, the ball is elastic.
The ball and the valve seat sealing ring are made of metal materials, so the sealing pressure ratio is very large. The pressure of the medium itself cannot meet the sealing requirements, and external force must be applied.
Elastic ball ball valve is suitable for high-temperature and high-pressure medium balls.
The above is an introduction to the different classifications of American standard ball valves.
