Direct-Coupled Rotary Vane Vacuum Pump pumps gas from sealed containers with a pumping speed of 4 L/s. It offers the rotating speed of 1400 r/min and has the capacity to hold 1L of the oil. Designed with automatic double anti-return oil safety device, small-diameter conversion joints, KF interfaces, and flange interfaces for the user-friendly experience. Equipped with vacuum drying oven, freeze dryer and printing machinery.