Used 1500 gallon glass lined Pfaudler reactor body. 78" diameter X 72" high straight side. Welded dished heads. Internal rated 100 PSI @ 650 degrees F. Conventional jacket rated 90/90 @ 350 degrees F. NB# 33981. Fittings Top: 30" cover opening, (3) 4", (2) 6", and (2) 8". 3" center bottom drain. (1 factory installed plug on top head, No manway cover)