!!WORKS!! vacuum pump, vacuum ejector

connects to shower hose. generates a vacuum from side tube. I've tried every design available for print and have not got one to work. this one works and it's such a good thing.

i don't have a way to measure yet but to guess its similar to the amount you can suck with your mouth which is fairly considerable.

I've pulled this design from a few creators on here but mainly actual part documents from lab supply companies.