Rated for 100 psi. Manufactured in 2001, made from series t-441 alloy with welded construction. Apc pharmaceutical/ hygienic portable pressure vessel. 18"ø with 13" straight side, dished head top cover. Approximately 1.5 cu. Ft. And 10 gallon capacity. Alloy products S/S canisters, 100 PSI mawp @ 350 deg. F, mdmt -20 deg. F @ 100 psig, 316l. (3) 1-5/16" i.D. Sanitary fittings. Bottom of tanks do not have drains but the center of the bottom is reinforced and appears that you could drill and tap and install a bottom drain. Two identical units available, priced each.