Description Overview Werner & Pfleiderer model ZSK40F 32.5E co-rotating twin screw extruder, 40 mm New in 1989 Specifications 500 rpm maximum screw speed driven by a 50 hp DC motor with SCR control 42:1 L/D ratio Dual vented barrel Electrically heated, water cooled barrel Controls Frame mounted temperature control panel with Barber Coleman AT Plus instruments Included Two Brabender gravimetric feeders with operational controls