How To Solve The Reliability Problem Of High Platform Ball Valve?
How to solve the reliability problem of Sanitary Ball Valve?
In a case where the working pressure of the medium is low, in order to maintain the tightness of the stainless steel high platform ball valve, it is necessary to form a suitable pre-tightening pressure ratio between the ball and the sealing seat. Suitable pre-tightening pressure ratio can extend the service life of the stainless steel high platform ball valve and enhance the safety of the stainless steel high platform ball valve during operation. In a case where the working pressure of the medium is strong, it is necessary to accurately select the pre-tightening pressure ratio of the sealing seat. If the pre-tightening pressure ratio is low, the tightness of the stainless steel high platform ball valve will be reduced; if the pre-tightening pressure ratio is high, it will cause the sealing seat to deform, affecting the kinetic energy of the stainless steel high platform ball valve, resulting in a lack of tightness.
If the sealing seat is deformed and damaged during use, the service life of the stainless steel high platform ball valve will also be shortened. The solution is to use a sealing seat with an elastic effect. In this way, the pre-tightening pressure ratio value does not need to be changed by adjusting the thickness, and the pre-tightening pressure ratio can be compensated within the elastic range to maintain the extension of the service life of the stainless steel high platform ball valve.
The sealing seat of the stainless steel high platform ball valve generally has a pre-tightening pressure ratio of about 0.1 nominal pressure, but not less than 1.02 MPa. The adjustment of the sealing seat pre-tightening pressure ratio is determined by adjusting the thickness of the gasket. The thickness error will affect the tightness of the entire stainless steel high platform ball valve, so reasonable adjustment is the key.
The tightness of the stainless steel high platform ball valve is also related to its structure. Different structures have different tightness effects. Selecting suitable tightness materials and reasonable structural requirements can obtain the high tightness of the stainless steel high platform ball valve. Not only can it extend the service life, but it is also reliable and safe, and can ensure the safety of the industry.
We know that the ball valve is a type of valve whose opening and closing parts are driven by the valve stem and rotate around the axis of the ball valve. It is usually used for fluid regulation and control.
The ball valve mainly includes a valve body, a valve stem, a ball and a sealing ring. The ball valve is sealed by the close contact between the ball and the sealing ring, and the ball is rotated to open and close the valve. At present, the ball valve sealing ring material mainly adopts polytetrafluoroethylene, which has a high expansion coefficient, sensitivity to cold flow and poor thermal conductivity. Therefore, when the sealing material hardens or deforms, the reliability of the ball valve seal is destroyed.
Therefore, in order to solve the above problems, the ball valve manufacturer provides a pneumatic flange ball valve with high reliability. The ball valve has high airtightness, especially after the ball valve is used for a long time, its sealing reliability is still high, which can effectively avoid fluid leakage caused by hardening or deformation of the sealing ring.
The pneumatic flange ball valve includes a valve body, a valve stem, a ball and a sealing ring, wherein the ball is connected to the valve stem, and the valve stem is connected to a pneumatic drive device. There are two sealing rings on the left and right, which are bonded to the valve seat of the valve body. The sealing ring includes a buffer layer and a sealing layer. One side of the buffer layer is bonded to the valve seat, and the other side of the buffer layer is bonded to the sealing layer. By adhering a buffer layer between the sealing layer of the sealing ring and the valve seat, the sealing effect of the ball valve is effectively improved. When the ball valve is used for a long time and the sealing layer is deformed or hardened, the elastic ball in the buffer layer can still make the sealing layer of the sealing ring close to the ball after closing, thereby improving the reliability of the ball valve seal and extending the service life of the ball valve.
