Anytime you add a union, there is a chance it will leak. In theory, it should be able to handle the pressure. Well it is another question.
If the pipe is long enough and you can flare it, that is what I would do. Double check if a double flare is needed. I suspect it is due to the amount of pressure it will have.
Let me know if I can help.
Tuesday, April 14th, 2020 AT 9:34 AM