Are there any regulations prohibiting the use of welded double-threaded pressure gauge valves?
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I originally planned to use a double-threaded design so that it would be easier to disassemble, but it hasn’t been put into use yet – it has already been tightened several times, and there’s also the issue of having to climb up to access it, which is very inconvenient. I was thinking of having a welder weld it in place, but since the equipment hasn’t been inspected yet, I’m worried whether that might cause any problems later on
It’s possible. It is recommended not to weld it in place; you know that this makes future maintenance easier. The hassle during maintenance isn’t related to replacing the pressure gauge, but rather the need to use fire when there is a leak.
A two-headed one is more useful once you get used to it compared to a single-headed one.
At the very least, a root valve should be added to facilitate replacement in the future!
Threaded connections generally do not allow welding, as the wall thickness at the threaded joint is not very thick, and welding may cause problems.
It can’t be welded shut; it will cause more problems in the future
Can it be used just as a socket weld then? Otherwise, change it to socket weld