Get current pricing for Busch, Busch 500 Cubic Mete Busch Model Puma Wp0500 Roots Vacuum Pump. Nominal Displacement 500 Cumt/hr. Maximum Differental Pressure 50 Mbar. Driven By A 2.2kw, 240/415v, 2860rp . Product Category: Process Equipment, Sub Category: Process Pumps: