Used 100 gallon Pfaudler vertical #5015 glass lined vacuum tank. 30" diameter x 41 1/4" deep. Clamped dished top, welded bottom head. Internal rated 25/FV @ -20 to 450 F. NB # 45895. MFR#R290-776. Built in 1990. Mounted on legs. Fitted top: (2) 2" and (1) 3". (1) 2" center bottom drain.