Werner & Pfleiderer Model ZSK40 40mm co-rotating twin screw extruder, S/N 180399, 1990 model year, 46:1 L//D vented barrel with 11 barrel sections and a 41″ centerline. Driven by a 50 HP 500-volt 1750/2100 RPM D/C motor and SCR Control with a screw speed of 517 RPM. Includes Acrison 1.5 HP weight loss differential feeder, 2.2 KW Tervac vacuum pump, and side feeder.