Unused 60" top head for a 500 gallon De Dietrich reactor. National board #2871. U-stamped. 75/full vacuum PSIG @ 500°F. Manufacturer #32127. Built 1981. 3008 glass. 17 1/2" manway opening. 5 1/2" agitator nozzle (4) 4 1/2" nozzles. (1) 8" nozzle. U-stamped.unused.
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