Used 21000 gallon 316L stainless Steel mixing tank. Manufactured by Mueller. 156" diameter x 256" straight side, dish top, flat slopping bottom, (3) turns 2" internal coil rated 150 PSI at 380 F, top mounted Chemieer agitator drive, model 4HHTA-5, 5 HP motor, single 4 blade pitched turbine blade, 37 RPM output speed, packaging gland seal, 4 baffles, 20" manway, 20" side bottom manway, 6" bottom outlet. Serial# P36989-2. Coil National Board# 17687. Built 1990.