Thanks Jouko
For giving a clear cut explanation about bellow consideration.
“ I am a bellows designer and I still say that it is best to design lines without bellows when ever possible.”
- - Next time I must be more cautious before considering a bellow as an option.
I just again want to clarify one point
“- internal friction forces can be so high that the unit doesn't work. Consult bellows supplier.”
Can you please elaborate the above point. Are you talking about friction between fluid & corrugated bellow body or friction at tie rod connection. Is the point valid only for pressure balance bellow or any kind of tied or untied bellow.
Your suggestion is really worth to us.