I Need advice on vacuum / suction experiment

[Blackie]

TL;DR Summary

Vacuum pump help

Summary: Vacuum pump help

I need advice on what type of vacuum pump would create max negative pressure in a very small area ( a space no larger than your pinky finger I guess) ? Maybe some kinda high suction low cfm pump? I don't know enough about vacuum pumps to know which type to use for my application. And advice would be greatly appreciated.

 

[trurle]

Peristaltic pump (roller pump). Cheap diaphragm pumps also works fine for low airflow, high suction pressure applications.
P.S. Never apply suction port on a body parts. Injury is guaranteed if applied.

 

[Blackie]

Ok, I've not researched that particular pump... I'm trying to achieve an insine amount of vacuum. Kinda like if you poked a small hole in a space ship. The amount of force focused near the hole... will a roller pump achieve that kinda pressure in a small area? Alot of the roller pumps I've seen look like they are for medical applications... and more advice would be greatly appreciated

 

[berkeman]

insine

Is that a typo?

Also, can you say what the application is? That will help us to make the best suggestions for you.

 

[russ_watters]

How about a syringe?

I'm trying to achieve an insine amount of vacuum.

The maximum amount of vacuum in air is 14.7psi, and it isn't difficult to get pretty close to it.

 

[jrmichler]

This little sucker (pun intended) just pulled 27 inches of mercury with my finger stopping the tubing. I think it would do better if I shortened the tubing. Trade name is MityVac. Harbor Freight has something similar: https://www.harborfreight.com/brake-bleeder-and-vacuum-pump-kit-63391.html.

 

[berkeman]

I used that same vacuum pump with an Edmunds Bell jar for a number of experiments. Plus, I used it to bleed my sportbike brakes for years. A great investment!

 

[Dullard]

As long as we're at harbor freight... They also sell an eductor-based 'vacuum pump' - I think they intend it for HVAC system evacuation. Feed it compressed air, and it creates a vacuum. Cheap, simple, and continuous (if you have compressed air).