Relation between Pressure and weight

[Megahertz]

HenrikOlsson, thanks a lot for your help.
Just one last question to confirm my understanding.
So, if I have two different diameters for two cylinders, I should calculate the weight individually for each and add it together towards the end to get the total weight.

[HenrikOlsson]

Yes, or calculate the total area and multiply that by the pressure.
If you have one 100mm and one 50mm cylinder you have an effective area of (50*50*pi/100) + (25*25*pi/100) = 78.5+19.6 = 98.1cm²

Just remember that if the cylinders aren't of the same size (diameter) they won't share the load equally (one will "push" more than the other at any given pressure).

/Henrik.