SHR,

Try to stick to your story. Above you said and I quote ...

"In my openion spring movement will be constant irrespective of pressure variation when Bourdon effect & pressure elongation on bend both are switched off."

I said you are wrong, spring MOVEMENT may be affected by pressure.

Now you are talking about spring LOAD.

You are WRONG about spring MOVEMENT. I agree that spring LOAD may not change (assuming it's a constant spring).