Used 20 gallon Pfaudler glass lined reactor. Internal rated 150 psi Full Vacuum @ 650 degrees F. Jacket rated 115 psi; 100 psi with Full vacuum internal @ 350 degrees F. Clamped top. Has 1 HP 3/60/1735 rpm Class I Group D, motor 2.5 DTW, 10:1 gear ratio drive, variable speed pulley with lubricator. Has a 3 blade retreat curve agitator, fin type baffle w/tantalum tip. Serial # E176-0618. National board # 36003. Built 1976.