iRex RX-2D Double Stage Vacuum Pump with a capacity of 1.70 CFM,AC Refrigerant Air Vacuum Pump/Wine Degassing/Medical Food Processing Air Conditioning Vacuum Pump (4.5 kg) Submersible Water Pump  (1 hp)

i-Rex products are based on the concept that “product development starts at the work site”, and thus every effort is into innovation and the creation of products of the highest quality.Heavy duty motor. High torque design for easy startup and efficient operation. Two stage design cleans the system more thoroughly than a single stage pump; the second stage starts pumping at a lower pressure so you can pull a deeper ultimate vacuum.