4,000 gallon Mueller Hastelloy C-22 vertical reactor. 8'6" diameter x 75" straight side. Dished top and bottom. Internal rated 59 psi/FV at 300 deg F. Inconel 600 dimple jacket rated 150 psi/FV at 300 deg F. 3-1/2" diameter shaft (no drive). (1) 4 blade impeller