Features Details Powerful Vacuum Pump: Experience top-notch performance with our pure copper motor! Designed with high torque and A2L explosion-proof, you can count on its reliable performance and efficient operation. Flow Rate: 5 CFM; Ultimate Vacuum: 25 Microns; Inlet: 1/4" SAE male, 3/8" SAE male, 1/2" ACME male inlet; Voltage/Frequency: 120V/ 60 Hz, Oil Capacity: 330 ml. Take on the Heat: Say goodbye to constant downtime with our innovative 2-stage vacuum pump! The T-shaped heat sink and cooling fan help the pure copper motor to effectively dissipate heat, allowing it to work continuously for over 2 hours. And with added overheat protection, you can enjoy stabilized performance and longer service life for your motor. Outstanding Oil Inlet System: Featuring an anti-backflow inlet design with a check valve and ball valve switch, you can avoid oil backflow and pollution of both the machine and the pipe body. And with the addition of an oil fume emission discharge filter element, you can enjoy reduced oil smoke emissions and working noise. Say goodbye to environmental worries. User-Friendly Design: Get ready to experience complete comfort! Designed with comfort in mind, the ergonomic handle is shaped to fit your hand and features a rubber-clad iron handle structure for easy lifting and holding. With the bonus of a sight glass and oil level scale, you can easily monitor the status of your oil level and lubricating oil, ensuring timely maintenance. Perfect for Different Needs: Take on a wide range of projects with ease using the VEVOR HVAC vacuum pump! Perfect for both commercial and domestic applications such as refrigeration maintenance, HVAC repair, resin degassing, wood stabilization, etc. With compatibility for refrigerants, including R1234yf, you can tackle any job with confidence.