What brand of vacuum pump is good?

[lay1014]

I have found a lot of brands, but I don't know which one is cost-effective. Do you have any help?
American Nas, Germany SIHI, Sweden Samson, US Tuthill, Italy Finder, India Garuda, Turkey Gucum, China EVP, and other brands.
Help the gods.
Hayden.

 

[RVAmeche]

I think it what really drives it is the type of vacuum pump. In my experience if you want liquid ring Nash is the brand I've always heard first.

 

[Artisi]

If you were to give some meaningful background information as to what, where, why, you might get an answer - otherwise it's a meaningless question.

It is a capital mistake to theorise before one has data. Insensibly one begins to twist facts to suit theories, instead of theories to suit facts. (Sherlock Holmes - A Scandal in Bohemia.)