The Blichmann AutoSparge automatically sets the hot liquor flow rate and liquid level in your mash tun, and maintains that level automatically. The AutoSparge level and flow control system is a perfect accessory for RIMS systems, and it also works great with gravity systems or with pumps. Wort gently rotates on top of the grain bed to reduce channeling and oxygen pick-up, and to increase extraction efficiency. With a constant hot liquor level over your grain bed, complicated rotating sparge arms are unnecessary.