Used 3,000 gallon, Stainless Steel Reactor, 8' diameter x 8' straight height with dished heads. Lug mountings. Reactor has (10) turns of 2" diameter stainless steel coil around inside of tank for heating/cooling. Agitator is top mounted, stainless steel shaft and spinner, 3' diameter with (6) retreating blades. (less drive). No Stamp.