Cornell Model D-16 Versator, Serial #6242. This Stainless Steel Sanitary Model, Is Driven By 7-1/2hp 3/60/220-440 Volt Motor. With Stokes/Pennwalt Model 149-11 Microvac Vacuum Pump, Serial #87650, Lot #79078. Vacuum Pump Driven By 3hp 3/60/220-230/440-460 Volt Motor