I use it for watering the young shade trees that our neighborhood group planted along a local irrigation canal. The mature trees can tap canal seepage, but the young trees need a lot of water in the hot AZ summer. We just broke the record for days at 100-plus degrees in Phoenix: 143 days. It’s a roller pump, so it’s positive displacement, and it is rated at 300 psi or so. It does have a pressure regulator valve.
