Used 300 gallon Pfaudler glass lined reactor, rated 150 PSI and full vacuum at 450 F internal, size 4 Pfaudler agitator drive with mechanical seal, hydraulically driven less pump, 3 blade retreat curve agtiator, baffle, stainless steel skin over jacket, serial# 1374, NB# 1304, built 1990. Unit has (1) 1" Plug on bottom head.