4.5 CFM Single Stage 5pa Rotary Vane Deep Vacuum Pump 1/3HP 330ML HVAC AC Air Conditioner Tool 1 Stage Refrigeration Manifold Gauge Wine Degassing Milk and Medical Processing 110V 60Hz. Well-designed: Our vacuum Pump is made of die-cast aluminum housing and a composite anti-slip rubber base, which is lightweight and durable; Perfect for those who are looking to self diagnose or recharging AC systems; It maintains air conditioning systems by efficient removing moisture before refilling the refrigerant. Key Parameters: Flow Rate: 4.5 CFM, 75 micron Ultimate Vacuum:5 Pa, 1/3HP AC Air Tool Rotary Vane, Inlet Port: 1/4 or 3/8 Flare, Voltage /Frequency: 110V/60Hz, Oil Capacity:225 ml. Oil anti-back design: a special design for the intake passage, the oil pump can be prevented from contaminate the reflux line and the container is evacuated after the pump stops.Function: Internal high volume cooling fan for extended use and overheat self recovery fuse. Oil viewing window for monitoring oil quality and levels during when the vacuum pump is performed. Widely Use: The vacuum pump is widely used for both commercial and household applications, such as refrigeration maintenance, printing machinery, thermoforming, vacuum packaging, medical equipment. Any product you return must be in the same condition you received it and in the original packaging. We usually respond within 24 hours on weekdays. Thank you for shopping at our store.