ALIENTABI Backpack Sprayer 4 Gallon, 2.6Ah Battery Powered Backpack Sprayer with Lithium Battery for Weeding, Spraying, Cleaning

Q: How comparable is this to the FlowZone?

Compared with flowzone, our materials and quality are better and the price is more affordable

Q: How many GPM is the pump rated for?

Don't know the exact answer, I'm sure it's on the fact sheet of the advertised item but I will say I bought it to spray a line of Fir trees I have that are dying from a fungus and the it will reach easily 35 feet almost straight up. I also put liquid fertilizer in the tank and spray flower beds and other tree bases . Great item. Tank will empty quite quickly on the high volume setting but again I really like this sprayer and it's settings.