Used 35 gallon vertical sanitary stainless steel vacuum tank. 26" diameter x 16" high straight side. Welded dished top and bottom heads. Rated full vacuum and 50 PSI @ 100*F, National Board stamped. Shell thickness .1874", heads .1874". Mounted on staintless steel platform, (1) 1.5 side bottom drain. Fittings: Top: (4) 2, (1) 6, (1) 3.