I had the Robinair pump of the same model as yours; I sold it a while ago and it was a real workhorse never requiring more than oil changes. If you do occasional a/c work, the Vevor is more than enough @ 12 cfm....but those who need something for regular professional use, I still would recommend the Robinair.

Traditional refrigeration is 1/4 and 3/8 SAE fittings . The odd thread is either 1/4 [rare ] or 1/2 ACME found only on automobiles . Just read the my dead Robinair instructions and the open ballast is used to eject first moisture down to around 3000 micron then u close the valve . Its faster and makes the oil last longer .

Hello again, Catus Maximus and Tiny Thank you for another Great Video 👍

If the pump is okay, you should be able to reach a pressure of -999,9 mbar in a minute or two. Damaged pumps only reach -800 mbar.

The fittings on the Vevor allows you to connect your gauge hoses directly to the pump.

If these pumps are used for ac systems with schrader valves whats does the diameter of the pump connection matter wenn the valve on the ac system is limiting factor.... (sorry for my english as i am from Europe/Netherlands)

Thanks man...Good Job!

The blue cap there you have any idea where I can buy a replacement cap and also where to fond the right oil for it? Vevor site doesn't have those.

Good to see a review . I am looking at purchasing this vac pump but cannot find FACTRY SPECS anywhere . Mainly the RPM as I suspect its 2800--3500 . This is whats measured on forums vs . Robinair will be 1500--1800rpm . Running at very high rpm may need a different oil and its obvious will wear out quicker . Over heating cut out has been an issue in reviews Can u help out . ?

I now have 2 single stage vacuum pumps since someone was selling a brand new one with gadgets that were used ince for $20 off the Craigslist and i really only do car stuff and it looks like the 2 stage can pull a lot better vacuum but my question is doesvit really matter is it worth getting a 2 stage

Could you please tell me what the red cap is for.?

I bought new fittings with a shutoff valve.

Warning. You have to be at least 16 years old and IQ over 75 to use these pumps. As the nice uncle said, "You need to have at least 3 braincells to use this pump."

7:19 as a matter of fact, I am watching this video because i care about scientific grade vacuum pumps. because i need one of these roughing pumps to pump it down before i can even use my scientific grade vacuum pumps. lol

What kinda oil do you need to replace the oil on these?

i need how much

Looks like a good Robinair knockoff. I actually like my Robinairs.

✌️ I was here.😂

Bu alət nə işə yarayr

Because you can't fit all the Chinese letters that it would take to spell full, let alone empty on top!🤣