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    1/2 HP 6 CFM/7 CFM Rotary Vane Vacuum Pump

    5 out of 5 based on 2 reviews | Write a review
    1-stage oil-operated rotary vane vacuum pump, works at 110V 60Hz or 220V 50Hz with free air displacement 7CFM or 6 CFM, 5Pa ultimate vacuum, 1/2hp motor with internal cooling fan, die-cast aluminum housing, fast heat dissipation, stable operation and long serive life.
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    Delivery date: 6-12 days

    Low price 1/2 HP single-stage rotary vane vacuum pump for sale, air flow rate 6 CFM / 220V 50Hz or 7 CFM / 110V 60Hz, compact and light, easy to carry and operate.


    • Lightweight and durable aluminum alloy casing
    • Direct dirve motor with full copper wire structure, easy starting and strong construction
    • Non-slip top handle for portability
    • Built-in high-volume cooling fan to provide thermal protection and extend service life
    • Big oil sight glass for viewing oil level
    • Oil drain plug at the bottom of oil reservior for fast draining
    • Oil anti-back valve designto prevent oil from flowing back to pollute the pump system when the pump stops.
    • Large torque design makes the vacuum pump easy to startup, even under low temperature environment (5℃) or low voltage.

    Applications: The 1-stage oil-sealed rotary vane vacuum pump is widely used for vacuum packaging, vacuum freezing, automobile maintenance, HVAC work, air conditioning, refrigeration and other vacuum evacuation.


    Model ATO-RS-3
    Structure Single stage vacuum pump
    Voltage 110V 60Hz 220V 50Hz
    Free Air Displacement 7 CFM 6 CFM
    Ultimate Vacuum 5 Pa / 0.05 mbar
    Rotating Speed 1720 rpm 1440 rpm
    Power 1/2 hp
    Oil Capacity 250 mL
    Dimension 310x125x255 mm
    Weight 12kg

    Vacuum Pump Details

    Rotary Vane Vacuum Pump Details Introduction

    Tips: Structure of Rotary Vane Vacuum Pump

    Rotary vane vacuum pump is one of the most basic vacuum equipment in vacuum technology. Rotary vane vacuum pumps are mainly small and medium-sized pumps. Rotary vane vacuum pumps are available in single stage and double stage. The double stage vacuum pump has the structure of series connection of two single-stage pumps in order to obtain a higher vacuum.

    Rotary vane vacuum pump is mainly composed of pump body, rotor, rotary vane, end cover, spring and so on. A rotor is installed eccentrically in the cavity of the rotary vane pump. The external circle of the rotor is tangent to the surface of the pump cavity (there is a small gap between the two). There are two vanes with springs in the rotor groove. When rotating, the top of the vane is contacted with the inner wall of the pump cavity by centrifugal force and spring tension. The rotor rotation drives the vane to slide along the inner wall of the pump cavity.

    The relationship between the pump flow rate and inlet pressure is as follows: under the inlet pressure of 1333Pa, 1.33Pa and 1.33×10-1 (Pa), the pumping speed shall not be lower than 95%, 50% and 20% of the nominal pumping speed of the pump respectively.

    Existing reviews of 1/2 HP 6 CFM/7 CFM Rotary Vane Vacuum Pump
    A solid shell
    I bought this vane vacuum pump 2 month ago. 1/2 hp motor with internal cooling fan and die-cast aluminum housing. I used it as soon as I received it. I would recommend it to more friends.
    From: Dozzie | Date: 15/11/2022
    Was this review helpful? Yes No (0/0)
    Vacuum pumps for continuous operation for 24 hours
    Are your Vacuum pumps suitable for continuous operation for 24 hours?
    From: Stephen | Date: 28/12/2020
    Was this review helpful? Yes No (0/0)
    ATO Responded
    No, our vacuum pumps are oil-operated pumps, which are usually used for air conditioning maintenance, and the vacuum pumps are not suitable for continuous operation for 24 hours.
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