500 gallon Pfaudler glass lined reactor body. Welded dished top and bottom heads, Reglassed . RA Series. 48" diameter X 73" deep. Internal rated 100 PSI @ 450 degrees F. Conventional jacket rated 100/100 @ 450 degrees F. NB # 41632. Lug mounted. Reglassed in 1998 and not used since. Originally built in 1982. Glass# 9115. MFR# R6918160 This reactor has a 6" nozzle.