Stainless Steel Ball Valves Can Be Divided Into Several Types Of Structural Forms
Stainless Ball Valve According to the structural form, it can be divided into:
1. Floating ball valve The ball of the ball valve is floating. Under the pressure of the medium, 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.
The floating ball valve has a simple structure and good sealing performance, but the load of the working medium borne by the ball is all transmitted to the outlet sealing ring. Therefore, it is necessary to consider whether the sealing ring material can withstand the working load of the ball medium. This structure is widely used in medium and low pressure ball valves.
2. Fixed ball valve The ball is fixed and does not move after being pressurized. Fixed ball valves are all equipped with floating valve seats. After being pressurized by the medium, the valve seat moves, so that the sealing ring is pressed tightly on the ball to ensure sealing. Bearings are usually installed on the upper and lower shafts of the ball, with small operating torque, suitable for high-pressure and large-diameter valves.
3. Elastic ball valve
The ball of the valve is elastic. The ball and the valve seat seal ring are made of metal materials, and the sealing pressure ratio is very large. The pressure of the medium itself cannot meet the sealing requirements, and external force must be applied. This valve is suitable for high temperature and high pressure medium balls.
