I want to keep the pressure inside a balloon (effectively - a rubber vessel) constant, as the balloon is compressed. I'm wondering if a regulator like this (wiki page here showing mechanism - I believe) can do it? They're designed to regulate a higher relatively constant pressure (eg large volume at 30bar) down to <1bar in a smaller vessel to keep that constant. I think these are one way tho - if the pressure starts increasing in the outlet the inlet will close off, rather than dissipate that increase back to the source, whereas I want to effectively use it to do exactly that. Would this work? Or is there a better way to do this?
Thanks for all help given!