Mash Tun Fly Sparge Float Switch

On our last brew day, our Mash Tun over-filled with water during the Fly Sparge.  I knew there was a way to rectify this, so I set out to do just that.  And then some.  Our 70 quart Coleman Xtreme Mash Tun Cooler didn’t have a sparge assembly, and I decided to fix that at the same time.  This is a very popular cooler to use as a Mash Tun, so I will provide the measurements for the sparge assembly.
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70 Quart High Gravity Mash Tun

We found out pretty quickly that our 10 Gallon Mash Tun would not work for High Gravity or Large Grain Bill brews.  I told my brew partners that we would probably need a Coleman Xtreme 70 Quart rectangular cooler for our next Russian Imperial Stout.  Immediately, my brother-in-law pulled up a picture on his phone and with amazement declared, “I have that cooler in my garage!  I’m not even using it”.
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