Used 9000 gallon vertical pressure vessel. Manufactured by MVE Inc. Model VS-9000-NC-250-114 Inches. MAWP 250PSI/FV@100F. MDMT -320F@250PSI. Designed for Liquid Oxygen, Liquid Nitrogen, Liquid Argon. Weight 26800 lb. Serial #10683. National Board #59878. Built 2000. Past used Liquid Nitrogen.