VEVOR Air Compressor Pump 3HP 11.8CFM Air Compressor Head Pump 115PSI Single Stage Twin Cylinder Aluminum Air Compressor Head Piston Style Splash Lubrication Pump (Single Stage)

Like many Amazon reviews you must assess the reviewers understanding of product to determine if it is a fair assessment.Seems most of the negative reviews for this pump are likely from a lack of understanding how to properly install & setup.Granted the manufacturer/ distributor isn't doing themselves any favors by not including instructions on the issues which should be checked out prior to pump installation - even if they don't provide detailed instructions.The reviews of failed units are more likely attributed to failure to check the following prior to installation.1. PROPERLY match motor to pump. By true amp draw & not just stated HP SPL.2. Test your presure switch & unloader.Make sure you T off for the unloader line.3. Remove & clean check valve.4. Don't just use your old pulley & expect magically its going to run at the proper RPM - actually DO the RPM calculation & get the CORRECT pulley size.5. Check for burrs & manufacturing /machine defects & repair PRIOR to installation. YES - This is on you as the installer -6. Properly align motor & pump pulley.That's most of the items & if you don't understand any than either research or bring it to a qualified service professional.Ignorance & failure to properly diagnose, engineer & install the pump shouldn't be a reflection on the product. Take responsibility for your workmanship.

Runs great on top of compressor it's a smaller one than was on it but is working oit great

I installed on a 60 gallon tank, works well, can get pretty hot, I monitor and plan to add a temp sensor to shut down for protection

Had an old Campbell Hausfeld 60 gal, 6 hp that pump went out on and too many parts were unavailable to mess with trying to repair it. Installed this pump ... obviously not a direct fit, had to drill new holes to mount this and then move the electric motor to line up pulleys and allow a new belt to fit (used a 47", 1/2" V belt). a little difficult to plumb the copper line to check valve. You can buy flexible stainless braided, but they are pricey. Had a bad check valve as well. Now back on line and better than it's been for many years. The quietness compared to original pump is a significant plus as well.

Works real good I have no complaint

Works well ,pumps the air like I need , runs a lot quieter than my other compressor, very pleased!

Mounted to a compressor tank to us with a sand blaster. Works great, was supper easy to mount. Worth the money.Mary

This compressor pump runs quieter than my other compressor perhaps due to a foam air filter as opposed to a paper type , and it builds up quickly . The only reason I gave it 4 stars instead of 5 is that it doesn't have a crankcase vent and that makes it take the better part of 2 hours to fill it with oil with much spillage . Changing the oil will be a chore . I've never had one without a vent before . The oil cap serves as the running vent so it works well but without a separate vent to allow air to escape the crankcase the thing just takes forever to fill up . J.B.

Update- 09/13/2020- Previously the compressor I received had a leak at the bottom pan gasket within the first 90. After much discussion with the vendor, they sent a replacement free of charge. During install discovered fin above the air inlet bent, fortunately doesn't seem to cause issue so far. Installed, ran for 20 minutes so far, no leaks or issues so far. KUDOS to the vendor for the replacement. October 2020 will be the real test and I will return with an update.Happybuy Air Compressor Pump 3HP 11.8CFM Air Compressor Head Pump 115PSI Single Stage Twin Cylinder Aluminum Air Compressor Head Piston Style Splash LThe above listed product is complete junk, do not buy it, unless of course you like to give money away to an unaccountable vendor in another country with a non existent warranty. Now if you are lucky enough for the product to fail within the 90 day Amazon AtoZ warranty period, Amazon will force them to take a return, or refund but beyond that you are completely on your own. I was not that lucky though.Here is my story. I purchased and installed this pump in my personal garage on May 2020. It may have about 30 minutes or less of run time before I noticed ticed the compressor oil level had fallen from the half way mark to no oil in the pump lens whatsoever. After further inspection, I noticed oil leaking down the pulley side of the bottom of the block. Assuming the best course of action was to report it to the vendor in hopes of a swift resolution, I was simply told to hire someone or "GLUE IT MYSELF". That about sums up the type of warranty to expect from this vendor. Do yourself and others a favor, don't do business with this vendor.

Downside is no directions as to type of oil, how much, bolt pattern, break-in and things like that. I was worried about the packaging as a lot of them arrive damaged and I can see why. Mine came wrapped in some white foam, but I was lucky it was not damaged. A few of those air bags would have made the packaging much better. It took forever to put the oil in it (it takes a quart). Pour it in through the orange relief valve SLOWLY. I used some synthetic compressor oil that runs about 10 bucks on amazon. I ran it for a half hour with the valve open to break it in like my DeWalt said to do on my other compressor. This pump replaced a pump on a Husky 60 gallon tank. Mounting was not a straight bolt-on, but if you are using a compressor, you should have no issues with this. I had to redrill the mounting holes for the pump and the motor. Rerouting the line from the pump to the tank just required a couple of compression fittings and some 1/2" copper tube and pipe bushings I had laying around. I like the cooling fins on the discharge air to the tank. All pumps should have that. The flywheel was aluminum and very light. I consider this a plus as it cools the pump as it spins and reduces start up torque. The pump did not get as warm as I expected. I had a 3.5 " pulley on the motor so with the 10.5" pump pulley, it took a little bit longer to press up, but not bad. Quieter than my Dewalt, but it's not working as hard either. I plan to hook the two compressors together for a large reserve of 120 gallons and lots of airflow. The pump says it will press to 115 psi, but that is really dependent on the set pressure on the control. Mine runs to 125-135 psi before the pump shuts off. Time will tell if the unit holds up, but initially it seems like a good buy. I would like to know how the one reviewer actually contacted this Happybuy place (and got GREAT results) as I could not find any contact information at all.