Used Capital City Iron Works 15,230 gallon vertical 316L stainless steel tank. 12' diameter X 18' high straight side. Internal rated 12" water/ 2" water vacuum@ 450 degrees F. S/N 38241-17. Flat bottom, slight cone top. Top fittings: (1) 10', (1) 2", (1) 6", (1) 4", and (1) 8". 24" side bottom manway. (2) 2", (2) 3", and (1) 6" side bottom outlets. Insulated.