Aspirator vacuum pump from plumbing stuff
Channel: Ilusys Systems
Date: 18/08/2020

Ultra cheap vacuum pump you can build in few minutes with fairly good performance. No brainer if you have free water at 8-6 bar.

You can use bigger diameters to get faster pumping, but you will use more water.

Can't believe I wasn't able to find video like this. It's really usefull stuff...