Used 30 gallon Stainless Fabrication corp (100 liter) T-304 stainless steel double wall pressure vessel. Welded dished heads. T-304 Built 1996 sanitary construction. Fittings Top: (1) 10'' clamped hand hole, (1) 1 1/2'' (1) 1 1/4'' and (1) 3''. Bottom drain 3'' reduced T. 1 1/2''. Internal rated 45/FV @302F. NB# 578.