VEVOR jednostupňové vakuové čerpadlo s rotační lopatkou 7CFM 1/2HP hluboké HVAC

At first I was pretty disappointed with this vacuum pump. It struggled to achieve the same vacuum as my old 1/3hp pump. But one of the previous reviews on this page pointed me in the right direction: the outlet filter is much too restrictive. Removing it (the cap that houses it can be opened by undoing one Philips screw) fixed everything, and now I can achieve 50-100 micron vacuum instead of the 400 microns that my 1/3hp pump was limited to. I've observed no ill effects from running without any filter, but I'm sure it's a warranty killer.

Am buying another one soon

Was surprised how quick it was to vacuum 25ft lines and obviously even more with 15ft lines. Sounds like a nice and smooth pump. I hope reliability will be there long term.

This vacuum pump has worked excellent for drawing a vacuum on 2 of my vehicle AC systems. Great value for a solid piece of equipment

I have a 4cfm and then I got this 8cfm, it is definitely quicker. Works as expected, now the question is how long will it last? Regular oil changes and a few weeks in it's still working awesome. Ps don't forget the exhaust cap. Your looking at almost double the price anywhere else

I purchased this pump to do engine valve leak testing on my Ford 3.0 V 6 engine. The pump is high quality and It is easy to use, it got the job done with ease.

This pump comes with a fitting that works with R-12. If you are intending to use it on a system that uses R-134a, you will need to buy an adapter or change the fitting. Due to this added expense, I knocked it down a star on price, and below average on features. My local auto parts stores do not stock the correct fitting, but I did find R-12 to R-134a adapters on Amazon ($10 for two sets).

It stops work after 6 months with 10 times using it. It's vacuum starting degrade. Buy higher quality pump if you use it often

This pump is actually really well made. I had an issue with a stuck vane at first. My son figured it out. We also changed out the oil for a thinner consistency (I think our elevation had something to do with this idk). It runs perfectly now. We use it on our milk line. I’d definitely recommend

First use covers its cost. So I agree with \"Don't turn it on, take it apart..\" This one is ETL certified, Something the other's dont have. so, lets see whats in there. Pump Body: Yellow shipping oil was cleaned and removed before filling. Casting and machining quality is typical, and acceptable, definitly built to a cost, but clean enough inside with nothing loose or out of place. Gas Balast feature - A useful feature missing from similar models when dealing with moisture removal. Inlet valve and backflow valves. useful, and included. Something skipped on others, a value added feature. Electrical safety: Items often left out to save cost. This one actually has them. 6A Self-Resetting overload protection. KUOYUH 88AR 6A - generally keeps the motor from overloading if the pump ever jams up. As an electrical motor can vastly overload and burnup long before a 15A circuit breaker would pop. Electronic Centifugal Switch - Renaissance Technology LECS-120P - this Motor is far safer to use around flamable gases with this. Vastly value added over the typical mechanical switch inside these motors. 200uf Start Capacitor is marked as UL Recognized. Easy enough to access and replace if it ever goes bad. Wide power switch with sleeved connectors. Again little safety and assembly details often left out to save a few pennies are actually included here. 1/2HP listed, but only 4A - Somehow this doesn't add up, with only a start capacitor. This seems typical for similar pumps and motors from China with an overstated HP rating. Certainly this still remains a motor that will do the job, I generally consider half the listed HP as their more likely value. Instead of some kind of \"Calculated, peak, ideal, momentary on startup, equivalent, whatever is highest HP\" they tend to list on their labels. Overall for the price, the value added features, and certifcations are worth the price. its still a low cost pump from China, but at least they've made it the best it can be.