I worked on custom built Mueller Kettle, but the rest of the system, Mash Tun, HLT, CLT, and fermenters, were all old dairy tanks. As mentioned the MT was Horizontal open top tank with a retrofitted perforated stainless screen on the bottom. A freon jacketed CLT worked very well as a HE coolant when knocking out.
The fermenters were horizontal freon jacketed tanks which worked very well as lagering vessels, but were also used to produce ales. The drawback to the freon was the layer of ice that would form sometimes as they tried to chill. We had them setup so the primary would gravity feed to secondary, and the secondary would gravity feed to tertiary.
Without a cone to harvest yeast it can be tricky though. We would transfer out of the tank we were harvesting from and use a sterilized canoe paddle to push the yeast to the drain into a bucket.
It was far from ideal but we made some great beer there.
Last edited by Jephro; 10-02-2007 at 09:25 AM.
Jeff Byrne (aka jephro)
11 year pro craft brewer available for hire...
Puyallup, Wa - for now