The main advantage of the valve stem is its good compressibility, good insulation, and less prone to corrosion and rust. It has a double-sided sealing function, is relatively wear-resistant, and has a long service life. Good maintenance of the valve stem can extend the service life of the valve stem. What are the main reasons for the deformation of the valve stem during use? Today, let's take everyone together to understand the main reasons for valve stem deformation!

The valve stem manufacturer tells you that there are several reasons for the valve stem to break or deform:

1.The part of the valve stem that usually breaks is at the bottom of its upper and lower threads, because the area at this location is relatively small, and corresponding force concentration and excess may occur. Standard situation.

2. Fracture occurs when opening. Generally speaking, the valve stem will break when opened. The main reason is that the gate has not yet separated from the valve seat, and the valve stem is broken at the root of the surface or bottom line. Usually, it is believed that the door is stuck. This is not all the reason, nor is it important.

3. After the valve body is closed, there is abnormal heating and pressure reduction in the middle chamber of the valve body, which means that after the valve is closed, the fluid pressure in the middle chamber between the upstream and downstream sealing surfaces is much higher than the upstream pressure