NAVAC · NRS20
NAVAC NRS20, 14 CFM Single-Stage Oil-Sealed Rotary Vane Vacuum Pump, 115V 1-phase
- Motor
- 1 HP
- Flow
- 14 CFM
- Technology
- Single-stage oil-sealed rotary vane
- Electrical
- 115V 1-phase
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Rotary Vane Vacuum Pumps
NAVAC oil-sealed rotary vane vacuum pumps, from 1.5 to 212 CFM. Single-stage NRS, UniDrive and UniDrive LC-MS for industrial duty; two-stage NRD4, EcoDrive, ShieldDrive, SDi and DuoDrive for deep vacuum, lab and process work.
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About rotary vane vacuum pumps
An oil-sealed rotary vane pump uses sliding vanes in an off-center rotor to sweep gas from the inlet to the exhaust, with oil sealing and lubricating the gaps. The result is a compact, efficient pump that reaches far deeper vacuum than liquid ring or most screw pumps on clean, dry air.
We stock NAVAC single-stage pumps (NRS, UniDrive, UniDrive LC-MS) for packaging, CNC hold-down and thermoforming, and two-stage pumps (NRD4, EcoDrive, ShieldDrive, SDi, DuoDrive) for laboratories, freeze drying, degassing and analytical instruments.
Questions? Call a guru at 866-203-9939.
Frequently asked questions
What is the difference between single-stage and two-stage rotary vane pumps?
A single-stage pump compresses gas once and is the workhorse for rough vacuum jobs like packaging, hold-down and forming. A two-stage pump puts two pumping stages in series, so it reaches a much deeper ultimate vacuum, down to the 10⁻³ Torr range, for labs, freeze drying and degassing.
What maintenance does an oil-sealed rotary vane pump need?
Regular oil changes, plus checking the inlet filter and oil mist (exhaust) filter. Using gas ballast when pumping condensable vapor keeps water out of the oil and extends its life.
Can a rotary vane pump handle water vapor?
In small amounts, using the gas ballast valve. For steady water vapor or wet gas, a liquid ring pump or a dry screw pump is usually the better choice.
How do I pick the right size?
Match the pumping speed in CFM to your process at its working vacuum level. Tell a guru the volume, target vacuum and cycle time and we will recommend a series and size.