Blichmann Auto Sparge. You will love this set it and forget it design.
The autosparge automatically sets the hot liquor flow rate and liquid levels in your mash/ lauter tun. Works well with RIMS or gravity systems.
Auto sparge is a stainless steel float ball and rod that comes wth a 18" silicone hose. Will fit any pot larger than 12" in diameter even converted kegs. The auto sparge requires a 13/16 to 7/8" mounting hole.
If you are ordering a boilermaker Blichmann can place the hole for you at your desired location. Just give us a call.