Is the sealing of the ball valve good?

The ball valve has good sealing performance, thanks to its unique design and material selection. The ball valve uses a ball as the opening and closing element, and can be opened and closed by rotating 90 degrees. It has a simple structure and is easy to operate. Its sealing performance mainly depends on the tight fit between the sphere and the valve seat, as well as the selection of sealing materials.

In terms of sealing materials, ball valves often use elastic materials such as polytetrafluoroethylene to manufacture valve seat sealing rings. This material not only has strong chemical stability and can resist the erosion of various corrosive media, but also has good elastic-plastic deformation ability. Under the action of medium pressure, the sealing ring can produce certain elastic-plastic deformation, compensating for the manufacturing accuracy and surface roughness of the ball, thereby ensuring the sealing performance of the ball valve.

The sealing performance of ball valves is also reflected in their working principle. When the sphere rotates to the closed position, the sealing surface tightly adheres to the valve seat, forming a reliable seal. This sealing method not only has good sealing performance, but also effectively prevents medium leakage. Especially in the fully open or fully closed state, the sealing surfaces of the ball and valve seat are isolated from the medium, avoiding the erosion of the sealing surface by the medium passing through the valve at high speed, further ensuring the sealing reliability of the ball valve.

In addition, ball valves can be divided into soft sealed ball valves and hard sealed ball valves according to their different sealing forms. Soft sealed ball valves have excellent sealing performance and can reach zero leakage standards, suitable for normal temperature and pressure pipelines with corrosive media; Hard sealed ball valves can be used for a wider range of pressures and temperatures, including pipelines with low temperature and low pressure, as well as high temperature and high pressure.

In practical applications, the sealing performance of ball valves has been widely recognized. For example, in industries such as petroleum and chemical, ball valves are widely used for medium transportation and shut-off, and their reliable sealing performance ensures the safe and stable operation of the system.