Used Stainless steel 450 gallon jacketed tank. 49" diameter x 54" straight side. Tank jacketed on sides and bottom. Jacket is not rated for pressure. Top is half closed with hinged lid with handle for the other half. Tank is on three legs. The jacket has two 1" threaded nipples with elbows and plugs. The bottom drain is 3" tri-clamp pipe with sanitary fittings. The side has one 1" threaded coupling with plug. The top stationary half has one 3" tri clamp pipe, and three 2" threaded couplings (two have spray balls attached inside the tank).