Used- Alaskan Copper Works Pressure Tank, Approximate 500 Gallon, 316L Stainless Steel, Vertical. Approximate 42" diameter x 82" straight side, dished top and bottom. Internal rated 35 psi at -20 to 250 degrees F. Mounts on (4) side lugs. Serial# 1733, National Board# 1583, built 1989.