Good grief SHR, don't you read anything ?

You are may be wrong in stating .....
"Spring load is directly related to spring movement (vertical) so there should not be any issue with referring movement or load." We all know what Hookew's law is. But what about constant force springs as I mentioned ?

Furthermore, saying ...
"If you wish to see no change in spring load/movement for changing pressure" ....

In creating a stress analysis model, you should be looking for realistic representation of what might actually occur in a piping system, not finding ways to hide or ignore effects.