How to improve the sealing performance of pipeline flanges?
Thread Content
6.0 MPa, threaded flange connection – how can we ensure that there is no leakage at the junction between the flange and the pipe? When connecting a pipe to a threaded flange, tape is often wrapped around the pipe threads that match those of the flange, but leaks can still occur in such cases. How do people solve this problem when it arises? Moreover, many high-pressure environments also use threaded connections
Flange connections are generally the better choice
The original poster has a wrong concept of sealing; the sealing surface of a threaded flange seal is not at the threads, but at the sealing edge on the pipe end. As long as the pipe end is properly sealed, there will be no leakage at the threads
How to improve the sealing performance of pipeline flanges? Flange sealing relies mainly on the sealing surface, not on the threads that connect it to the pipe
Threaded connections are best sealed with anaerobic adhesive; there are special sealants for pipe threads, and it takes 24 hours after application before they can be used – their sealing effect is much better than that of regular tape. The well-known advantage is Loctite. Search online and see.
Agree with the view from the fifth floor. Under normal pressure, raw tape can be used, but thread sealant will give better results and will completely solve your problem as well.