CV-15HS Vacuum Generator Pneumatic Exhaust Air Ejector Vacuum Ejector Air Fitting Vacuum Suction Cup with

you will need some additional parts to set up. at the time of writing (2025) pressure valves were available on amazon for $15 USD (optional) the rest can be purchased from Harbor freight for under $10 USD. so 25-40 USD for the whole set up.

Why did you pick this product vs others?:Good value. Unit worked well in producing the required vacuum over a range of input compressed air pressures. However, no specifications were supplied with the unit or are available on the vendors page on Amazon (vacuum volumetric flowrate vs. desired vacuum pressure). I had to run a series of bench engineering tests to develop the necessary information on the unit. I deducted 1 star because of lack of specifications/engineering information.

There is a fine point of flow rate/pressure where too much can reduce resulting vacuum, but it's impressive all the way through it's ability.

I have several of these vacuum generators, and most of them will pull 26.5inhg. I had 1 that only pulled 24inhg. These work just as good as Airtech, but a fraction of the cost.

Used to clean out engine cylinders - ran up to 150psi