Used Hatton Enterprises Acid Hydrolysis Digester System. Consisting of: (1) Approximate 12” diameter x 168” long SB-551 Zirconium chamber, rated 400 psi at -20 to 447 degrees F. Driven by a 5hp motor thru a reducer. Includes a top feeder driven by a 10hp motor thru a reducer. Certified by Astro Cosmos, National Board# 1891, serial# 69841, built 1999.