Used 12,000 gallon horizontal carbon steel pressure tank. Manufactured by Lubbock Tank. Rated 250 psi @ 650 Deg. F. U Code Stamp. Head thickness - .35"; Shell thickness-.580". Mounted on loose steel Saddles. Magnatel float on side. Built 1962. Unit with Corkin 290 compressor on head. Compressor can be removed. Previous Usage: Anhydrous Ammonia.