The main reason for the leakage of the vacuum ball valve

As a vacuum and air tightness control device, the vacuum ball valve is connected by electromagnetic mode control, using a loose flange, a quick release flange and a thread. The vacuum ball valve is a straight-through spherical ball that can be used under vacuum and low pressure. According to the shape of the joint surface, it can be divided into the following types: smooth, concave and convex, grooved, trapezoidal, lens, O-ring. It is widely used in various gas and liquid positive and negative pressure pipeline systems, in line with GMP. standard.

The vacuum ball valve will encounter leakage problems during use, and the main reasons for the vacuum ball valve leakage are as follows:

1. The casting quality of cast iron parts is not high, and there are defects such as sand holes, loose structures and slag inclusions on the valve body and the valve cover body;

2, freezing and cracking;

3, poor welding, there are defects such as slag inclusion, unwelded, stress cracks;

4. The cast iron valve is damaged after being hit by heavy objects.