A bit too much pressure.......

Jokester said:
Well, it's the difference in pressure between the outside and inside that generates a force, f=pa after all. But this appears to be a hydraulic crusher, it's going to generate massive pressures inside it presumably, so it's going to be designed to contain that sort of dp.
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Does it relieve that pressure with a check valve?
 
Doubt that container is any way designed to withstand an implosion by vacuum. Probably very weak in that regard. More designed for pressure trying to burst it open.
 
arctine said:
Does it relieve that pressure with a check valve?
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I might be getting the wrong end of the stick, if this is just a container and the pump is somewhere else, then this won't have been designed necessarily for pressure containment. Of course if something serious happened, HSE would be asking to see your risk assessment for operating it safely...
 
Jokester said:
I might be getting the wrong end of the stick, if this is just a container and the pump is somewhere else, then this won't have been designed necessarily pressure containment. Of course if something serious happened, HSE would be asking to see your risk assessment for operating it safely...
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I was only asking because if there is a valve that relieves pressure it might let enough out under impact to make it fold whichever way it wants. Still unlikely though, the walls wouldn’t go in like that.


Anyway. Just because it can hold a pressure doesn’t mean it can hold a vac. Imagine a coke can, it can probably hold one bar of pressure inside it. Vacuum it out and it will crush very easily.
 
There is no hydraulic ram or anything in it, just a big empty container the waste gets sent too under pressure
 
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