Greatech Tri. Lobe Roots Blower Bore Size: 25mm to 400mm ( 1 to 16 inch) Air Capacity: 0.1 to 280 m3/ min Pressure: 0 to 20000 mmAq As Vacuum Pump: up to -5000 mmAq Types: Air Cooling Type Water Cooling Type Pressure Conveyance Type Vacuum Type One Stage Type Two Stage Type Soundproof Enclosure Custom Design and Manufacturing are also acceptable. Product Advantage: Tri. Lobe, High Efficiency Power Saving, Low Noise Stable Air Flow, No Oil Leakage Extremely Low Vibration, Long Lifetime Clean Air, No Oily Odors Sturdy Construction, Easy Maintenance Best regards, Susan Huang / Sales Executive Greatech Machinery Industrial Co., Ltd. E-mail: susan.greatech@ gmail.com Website: www.greatech-rootsblower.com Tel: + 886 6 2536997 Fax: + 886 6 2533092