Used 20000 gallon Vertical Jacketed Nitrogen Tank. Manufactured by Edasa Infra. 3044 Stainless Steel Inner Vessel with Carbon Steel Outer Vessel. Rated 175 PSI @100F. (4) Leg mounted. Dimensions 42' x 8'9". Dome top, dish bottom. Serial # 001-20000/78.32 175-98/1421. National Board #849. Built 1998. Associated Vaporizers Available at additional cost.