Carbon steel pipes and stainless steel ball valves
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The pipes are made of carbon steel, and the valves are stainless steel threaded valves – is there a problem with the connection between them? I would appreciate some guidance from experts, thank you!
No problem. The issues generally relate to the material of the pipes and welding flanges, as well as the medium being transported
Won’t this cause electrochemical corrosion?
No problem, it can be connected directly; there’s no need to worry about electrochemical corrosion since no special medium is involved
We use carbon steel for the pipes and stainless steel threads for the pressure gauges; that’s why this problem occurs. With steam and natural gas as the media, I’m not sure if there will be any issues Please give me some advice. Thank you!
No problem; it can be connected directly. There’s no need to worry about the threads rusting, as the more they rust, the better the sealing effect will be. All of the instruments currently in use are made of stainless steel, and they’re all connected in this way
It is best to use hermetic sealing; at low temperatures, electrochemical corrosion may occur at the threads, especially in coastal areas.
There are no problems. If your pipe is made of carbon steel, there will be no problem only if you weld stainless steel to it. Cracks can occur during welding. Since your pipes are made of carbon steel, choosing valves made of stainless steel will ensure no problems during use. And you still use threaded connections. Just make sure to note whether the thread pitch is imperial or metric. As long as it can be connected and used, there will be no problems
The medium is steam, and you need to take into account the sealing surface of the threaded ball valve. Such valves are generally referred to as threaded ball valves, and they usually feature soft seals, namely PTFE. If the steam temperature is too high, the sealing surface will melt or deteriorate very rapidly. It mainly depends on your steam issue. If it’s natural gas, then put your mind at ease. There will be no problems as long as the valve does not leak. The pressure of natural gas is relatively low. All your threads are at the back of the door station.