Product description: This product is a high quality oil-free micro air diaphragm pump, safe and oil-free, beautiful appearance, compact structure, high efficiency and energy saving, long service life, low noise, low vibration and low temperature rise. Product specifications: Voltage: 110V Power: 550W Maximum current: 2A Vacuum flow: 67L/min (2.4CFM) Air inlet diameter: 1/4'' Maximum vacuum: -900mBar Ambient temperature: 0-40 °C Maximum pressure: 8bar Rotating speed:1400rpm Size: 280 190 145mm Weight: 11kg The package includes: 1X oil-free micro air diaphragm pump. Oil Free Pump Air Compressor Oilless Vacuum Pump Piston Compressor Pump 67 L/min.Oilless Diaphragm Vacuum Pump Industrial Oil Free Piston Vacuum Pump 550w 110v Usa. It Uses a Pure Copper Motor for Stable Operation, Low Noise, and High Efficiency, Giving You a Better User Experience. Sturdy and Durable: the Housing Is Made of High quality Aluminum Alloy with a Galvanized Surface, Which Is Sturdy, Durable, and Rust-proof, Ensuring Good Adaptability to the Working Environment and Long Service Life. High Efficiency: This 550w Diaphragm Vacuum Pump Adopts a Pure Copper Motor and High-quality Bearings for Stable Operation, with a Rated Speed of up to 1440 Rpm and a Vacuum Flow Rate of 67l/Min (2.4cfm). Meanwhile, the Aluminum Alloy Shaft in the Middle Is Solid and Corrosion-resistant, Which Speeds up the Air Conduction to Improve the Working Efficiency. Environmentally Friendly and Convenient: This Oil free Diaphragm Vacuum Pump Can Be Operated Without Lubricating Oil and Any Media, Making It Environmentally Friendly. It Also Eliminates the Need for Regular Maintenance and Frequent Refueling, Which Is Very Time-saving and Convenient. Overheat Protection: It Has a Built-in Thermal Protector. When the Temperature Reaches 135°C±5°C/275°F±41°F, It Automatically Cuts off the Power Supply to Prevent the Motor from Burning out Due to High-temperature Operation. Easy to Carry: with Its Small Size(11.027.485.7in) and Lightweight(24.25lbs), and Without an Air Tank, You Can Easily Carry It to Any Workplace. Pure Copper Motor: It Adopts a Pure Copper Motor, Which Is Stable, Powerful, Efficient, and Long-lasting, Ensuring Good Evacuating Performance. It Can Be Used for Gas Tightness Experiments, Surgical Vacuum Suction, Food Processing, and Medical Machinery. Vacuum Flow: 67l/Min (2.4cfm). Packing Size: 362027cm/14.177.8710.62in. Product Size: 281914.5cm/11.027.485.7in. Feedback is very important to us. It is impossible to address issues if we do not know about them! Faction is our ultimate goal. We work hard to earn your trust and future business. A If you receive a defective item, you may return it or ask for a discount. Due to time zones, our reply to your questions may not be immediately. If it's non-workdays, please kindly be patient and wait till Monday.