Thank you for your answer.
I didn't explain myself well. I was actually talking about the isolation valve (it's a ball valve).
We have solved to install a flanged pipeline between both valves. It's best for future manteinance of the new valve.
So, the new valve will actually act as the...
Hi!, A control valve in the natural gas pig trap is not working well, it has a leak. So, we are thinking in installing a new valve just right next to the old one (together, no pipeline between). I need to present the justification based on standars (normativity), can somebody tell me if in any...