For sale is a Silvan Industries, Inc. (WI, USA) Stock No.D 20 G 60 Air Surge Tank / Receiver Tank. 20" Approximate diameter X 57" tall (including Kunkle valve at top). M.A.W.P.: 200 PSI at 450 degrees Fahrenheit. M.D.M.T.: -20 Degrees at 200 PSI. Manufactured new in 2002.