vessel rated FV/150 psi @ 400 degrees F, jacket rated FV/150 psi @ 400 degrees F Inco 600 half pipe coil jacket. Half pipe coil 3" 20 turns at 4 & 9/16". heads=0.531", jacket= 0.109" nominal. Lightnin right angle drive 4 blade pitch turbine agitator on upper tier, six blade dispersion mixer on lower tier,