Used approximately 100 gallon Expert Industries stainless steel dimple jacketed reactor. Internal 304 stainless steel rated 50/FV @ 400 degrees F. Inconel 600 jacket rated 75/FV @ 400 degrees F. Dished top and bottom heads. Off center drive. Mfg by Expert Industries, built 1980. S/N: 4259, NB# 285.