Pressure pot conversion - does it also do vacuum?

[Maniacy]

Hey guys,

so I just bought the popular standard choice of paint pressure pot:

I assume that it is identical to the ones sold under various brand names, including the harbor freight variant.
Now, my question is: can anyone confirm that this is also suitable for applying a vacuum? I've found some mentions, but I just want to be sure. Anything one has to look out for?


Thanks!

 

[E Williams]

It's possible, but it would not be a good option even if it did work since you really need a window on a vacuum chamber. There's no other way to tell when to burp the valve to prevent overflow if your resin/rubber bucket is too small, and so you can see when the material you are evacuating air from finishes foaming and collapses.

 

[Crimson490]

I have essentially the same pot, but I have a 1/2" clear lexan cover with a 1/8" deep x 1/2" wide groove running around the underside. In the groove I poured and made a silicon gasket to seal the lid to the pot. In the middle of the cover are three holes: fitting for vac pump hose, fitting for pressure gauge, and open hole for burping. I use a random piece of silicone to cover the hole when building vac.

 

[zorg]

My vacuum chamber is a pressure pot. I replaced the lid with a clear lid with a gasket made from silicone sheet. . Been using it for years without issue.

 

[Maniacy]

Thanks guys, I think this is the way to go!!


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[cavx]

Agreed with all comments above. The easiest way to convert this for dual purpose is to get Perspex lid, seal and gauges and have the two lids inter change.