Used approx. 645 gallon portable 304 stainless steel tank by Fabricated Products Co. 42" diameter x 9' horizontal. Dished heads. Intenal rated ATM @ ambient. Mounted on heavy-duty trailer with (4) 15" wheels. Top Fittings (1) 3" and (1) 1 1/2". Bottom Fittings: (1) 3/4", (1) 1", (1) 1 1/2", and (1) 2".