USA technology tri-lobe roots blower / air blower /rotary blower
High speed/high efficiency/Integral-Shaft Ductile Iron Impeller.

ZG Series Roots Blower Feature:
Low Noise Tri-lobe Rotor
Integrl-Shaft Ductile Iron Impellers
Dual Splash Lubrication
Over Size Cylindrical Roller Bearings
Low Vibration
Versatile Configuration
Piston Ring Air Seals
Lip-Type Viton Oil Seals
Duty: Pressure to 15 Psi
Vacuum to 15 Inch Hg
Flow: 13 to 3950 CFM
Power: 1 to 198 HP.