Instead of sucking a bunch of hot air, try this bong instead!

[Shingoshi]

With the use of NPT adapters, most of these will connect directly. If I remember correctly, you don't use solder, brazing or similar means to connect PVC!

If I DON'T go the sub-zero route as we've discussed before, the use of other connecting techniques won't be required. I don't know yet. I haven't made up my mind.

Shingoshi

I think of PVC welding as a form of gluing. But I may be wrong there too. The fact is, I want NO heat sources near this case. Especially not open flames.

You missed what I said here. I said I'm thinking of NOT trying to obtain sub-zero temperatures. Some of the stuff you've said elsewhere really hit home. I understood what you were saying, and took it into account. So I'm trying to be more pragmatic about the capabilities of the build. The realities of economics are substantially influential here. I get it.

No. I don't expect to get sub-zero temperatures from using low-pressure boiling. I know that's how it's achieved in refrigeration systems. But this is an entirely different beast.

As far as ultrasonics go, I'm not sure about that either. Not because it would be difficult, but because it brings a whole new level of cost to the project. Although, ultrasonics in the form of humidifiers can be brought cheaply on the internet. You really wouldn't need too many of them to contribute to the liquid's cavitation.

Shingoshi