Used 500 gallon Pfaudler #5014 glass lined tank/vacuum receiver model CV48-500-50. 48" diameter x 58 1/2" deep. Welded dished heads. Internal rated 50/FV @ 450 degrees F. NB# 44145. Fittings top: (1) 18" Manway, (2) 2" and (1) 3". (1) 2" center bottom drain. Mounted on legs.