Maximal allowable vacuum level (pressure) applied to offered chambers


Maximal allowable vacuum level (pressure) applied to offered chambers
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Arnost
Arnost
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Hello,
my name is Arnost, I'm working for CSRC company (www.csrc.cz). We are looking for some degassing equipment and I really like this arragment: Complete Vacuum Degassing System (https://www.easycomposites.co.uk/ds26-s-complete-starter-vacuum-degassing-system But maybe I will need bigger vacuum. Could you please tell us maximal allowable pressure applied at these products:

Professional Resin Infusion Catch-Pot


https://www.easycomposites.co.uk/cp1-resin-infusion-catch-pot-small

Vacuum Degassing Chamber 26L


https://www.easycomposites.co.uk/dc26-vacuum-degassing-chamber-26l

Thank you in Advance,
Arnost Pavlik
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Hanaldo
Hanaldo
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I don't see why the chambers couldn't hold far more pressure than absolute vacuum. Perhaps this is where my knowledge of the physics fails me, but I don't see the difference between a vacuum chamber and a pressure chamber. Ie, if a chamber can hold 100+ psi on the inside, then surely it can handle it from the outside. There is very little difference between these degassing chambers and a pressure pot in terms of structure, so I don't see why these couldn't handle 100psi? 
SkiFreak
SkiFreak
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Hanaldo (10/08/2016)
If a chamber can hold 100+ psi on the inside, then surely it can handle it from the outside.


Not so...
An experiment I did as a school kid (many, many moons ago) was to boil a small amount of water in a tin can over a flame. The lid of the can was then put on and as the water and air in the can cooled the internal pressure reduced, resulting in the atmospheric air pressure on the outside crushing the can.
Edited 8 Years Ago by SkiFreak
Hanaldo
Hanaldo
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SkiFreak (10/06/2017)
Hanaldo (10/08/2016)
If a chamber can hold 100+ psi on the inside, then surely it can handle it from the outside.


Not so...
An experiment I did as a school kid (many, many moons ago) was to boil a small amount of water in a tin can over a flame. The lid of the can was then put on and as the water and air in the can cooled the internal pressure reduced, resulting in the atmospheric air pressure on the outside crushing the can.


Yes... But such a can would have failed with very little internal pressure as well. 
GO

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