Used 50 gallon Pfaudler glass lined reactor, removable dome top, dish bottom, rated 20 psi and full vacuum at 450 internal, jacketed for 75 psi and full vacuum at 400 f, DTW Pfaudler agitator drive with 2 hp xp motor with mechanical seal, 3 blade retreat curve agitator, dip pipe, fin baffle, reglassed by Pfaudler with 9115 glass, serial# R185-0467, national board# 43756, reglass serial# 59107 new 1986, reglassed in 2003.