Used 100 gallon Dynamic Welding Inc. horizontal T-316L stainless steel pressure tank. 30" diameter x 30" long straight side. Dished ends. Internal rated 50/FV @ -20 to 300 degrees F. NB# 82. Built 1994. Mounted on lugs. Fittings top: (1) 1 1/2" (1) 3/4". End bottom 2" drain. East head: 1 1/2". West head (1) 1 1/2" flange.