We have bought three of these to replace windmill pumps with solar pumps and they work great for the price. The RPM adjustment is valuable for livestock wells that recharge at various GPM.

I am ordering another pump. I usually get about 1 year of constant use per pump. I run the pump off of 3 275w Trina 36v panels. 180 ft of 10awg wire keeps the voltage around 28V at the pump. I get about 6 to 6.5 gpm on my setup. I added 4 IBC totes to store irrigation water and need a back up pump.
This is my favorite 24v pump and seems to work great. My previous pump got a pin hole in the body.