Used 931 Gallon 316L Stainless Steel High Pressure vessel. Built by Fabwell Corporation. Rated 2100 PSI@ 725F. 4' dia x 7' T/T (17'3" Overall Height). Vertical mounted on Skirt. Built by Fabwell Corporation. Wall thickness is 3.75", Head thickness is 1.75". National Board #1842. Serial #11-1153-10. Built 2011.