Used 470 gallon 316L stainless steel vertical jacketed pressure vessel, Mfg. by Industrial Piping. Rated for 600 psi @ 500 Deg. F. internal and 90 psi @ 500 Deg. F Jacket, lug mounted. Serial #7018A, National Board #1026, Year built 1991. Previous Service: Hydrogen Sulfide, Estimated Weight 4,850#