20 cuft Patterson Kelley Processor SS Used- Patterson-Kelley Twin Shell Solids Processor, 20 Cubic Feet, Stainless Steel. Internal rated Full Vacuum at 200 degrees F, carbon steel jacket rated 30 psi at 200 degrees FV. Maximum material density 65 pounds a cubic foot. (2) 17" Diameter top charge ports with quick release covers, 8" center bottom outlet with a manually operated butterfly valve and a quick release cover. Shell driven by a 3hp, 3/60/220/440 volt, 860 rpm motor thru a Falk reducer, ratio 71.7 to 1. Mounted on carbon steel stands with 36" tall leg extensions. Serial# 17157.