Customer Reviews for VEVOR Air-Operated Double Diaphragm Pump 1 inch Inlet Outlet Aluminum 35 GPM Max 120PSI, Nitrile Diaphragm, QBY4-25L-1inch-35

For the money this pump does the trick at moving used oils. It has the ability to move some of the trash that collects on the bottom of the tanks but slows it's cycling when it's really thick and gross. My unit has a smallish leak on one side of the output leg and the bolts are tight. Not sure what the deal is there. I've used it about 8x now and have moved about 375gallons of varied used oils. One batch has a lot of debris in the tank and was the main purpose for buying this unit. Be nice if the manual was a little clearer on English.

You can't beat it for the price & reliability. The pump do last quite a while. .

Un buen servicio con productos accesibles a buen precio buena atención, recomendado para facilitar la nesecidad del cliente

We use these to pump acrylic coatings (paint with sand in it) and they work great. Put a small air regulator right at the pump so you can easily control pump output, and make sure that all the pump bolts are tight before you use it. No problems.

1st time ordering and the process what quick, simple and we received our pump in 2 days with FREE Shipping. They also applied a coupon to the order!!!

Our facility was using Yamada AOD pumps that required rebuild every 6-12 months, for the price and time for a rebuild this is a more cost effective route. I just replaced the unit I ordered in Sept 2022, a 9 month life on a pump that cycles every 10 seconds and runs 20 hours every day is good value for our business.

Absolutely great for the price! I have easily pumped over a 1000 gallons of diesel/oil/water mix with this pump so far and it is still working good. I will say it seems to need primed a lil more than the higher priced ones I have used and if your looking to continually run this for a long period of time your going to need a pretty good size air compressor, but it gets the job done!, and for the price I'm not going to complain!

Very compact, very good equipment, good quality withstands industrial and continuous use. i recommend it.

Great pump for the price. Sometimes you have to take it apart and clean up the debris inside. Reassemble works fine. Some bolts were not tight but overall a great little unit.

Works great and pumps super fast. Had some troubles at first getting it to stay primed, but after taking it apart a couple of times it seems to be working fine now.