Ball valve leaking
Thread Content
This kind of ball valve drain plug always leaks, and it can only be used for half a month after tightening. It leaks from the threaded position. Why is this kind of drain plug designed like this? Can it drain automatically?
This kind of valve has a fixed ball and double seals. The upstream and downstream of the ball valve are sealed. The middle of the ball valve is empty and does not come into contact with the medium. This drain can be used for pressure relief and sewage discharge.
It is recommended to check whether the thread opening is broken. Add more wrapping tape
This is because internal impurities have cushioned the valve port. The harder it is, the harder it is to close tightly. In the end, the valve port is damaged due to the force. If you can try to connect an external straight-through ball valve, the effect will be better.
Under what circumstances does this kind of valve discharge sewage? Is there any pressure that can be relieved?
It's just that the needle valve on the plug is actually very tight. Now I don't dare to tighten it because it's under pressure. Is it possible that it's leaking from the thread between the needle valve and the plug?
The principle of the needle valve is the same. In fact, what is sealed is a line. If impurities are cushioned on this sealing line, the harder you apply, the more damaged the sealing line will be. It has nothing to do with the thread.
Please order some spare parts, it is indeed easy to break.
This is easy to deal with. If the silk opening is broken, re-arrange the silk. If it is not broken, wrap more raw material tape around it! It was originally designed to drain waste and relieve pressure!
Generally, wrapping it with raw material tape will suffice. The wrapping direction of the raw material tape should be consistent with the direction of the thread, otherwise it will easily leak if it is wrapped.