Used Industrial Sheet Metal Works approximately 500 gallon vertical 304 stainless steel pressure tank. 48" diameter X 60" high straight side. Internal rated 35 PSI @ 200 degrees F. Welded dished heads. National Board# 313, S/N 19383-2. Top fittings: (4) 4", (1) 8" and (1) 2". 1" center bottom drain. Mounted on carbon steel legs giving 23" clearance to floor