The deformation chamber of the valve seat plate spring has poor sealing performance, resulting in silicon powder entering the deformation chamber of the valve seat plate spring, causing the plate spring to be blocked and fail. After that, the ball valve is locked by the valve seat and cannot be opened and closed well.

2. Silicon powder enters the middle chamber between the valve body and the ball during valve opening and closing, causing the ball to lock and preventing the valve from opening and closing smoothly. But the reason for this requires a working condition, which is that the silicon powder can only bond inside the cavity when it is moist. And silicon powder will not cause this kind of locking in dry or fluid conditions. If the silicon powder causes lock up in dry or fluid conditions, it means that the silicon powder has entered the deformation chamber of the valve seat plate spring.

Solution to the above two methods of causing forged steel ball valves to lock up:

The 1 Kezhong valve adopts a fully "O" - shaped sphere, double seat, and plate spring loading structure. The seat seal is designed as a wide face knife structure, which can remove the silicon powder adhered to the sphere during valve opening and closing, and has self cutting self-cleaning function. The plate spring adopts a double graphite sealing structure, which not only seals the valve, but also seals the plate spring. The medium will not enter the deformation chamber of the plate spring, so that the plate spring will not be blocked or fail, and can meet the requirements of long-term use.

2. In the special situation where the valve cavity is blocked by damp silicon powder and cannot be opened or closed, we generally recommend that customers strengthen the drying effect of silicon powder or use the V-shaped hemispherical valve introduced by Kezhong Valve to solve this blockage problem.