Yes, we use the auto-sparge during the RIMS phase of mashing with no issues at all. I'm trying to figure out why people think it should be doing flow control on something. It's only purpose is to avoid overfilling the mash while you are sucking on some suds and not paying attention to your brew! As far as having to adjust the arm for the recirc, I guess we are lucky and don't have that problem. When we change the input to the pump from the hot liquor tank to the mashtun output, we drop the level of the mash just enough the auto-sparge opens and allows the recirc without issue. We handle throttling with a ball valve on top of our mini-rims heater. Works great, no muss no fuss.