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When your operation demands consistent vacuum performance, low maintenance, and long-term durability, the NASH NRV Series rotary vane pump delivers. Designed for industrial environments, this oil-lubricated rotary vane pump offers unmatched versatility, with capacities up to 900 CFM and vacuum levels reaching below 1 Torr

Whether you're upgrading an existing system or specifying a new one, NASH rotary vane pumps provide a cost-effective, high-performance solution for a wide range of applications. 

Why Choose NASH Rotary Vane Pumps?

 

  • Deep Vacuum Capability – Achieve vacuum levels as low as 0.375 Torr 

  • Air-Cooled, Compact Design – Simplifies installation and reduces operating costs 

  • Long-Life Vanes – Minimize wear and extend service intervals 

  • Quiet Operation – Ideal for noise-sensitive environments 

  • Low Cost of Ownership – Efficient performance with minimal maintenance 

Rotary Vane Vacuum Pumps - NRV Series by Nash

Built for Demanding Applications

The NRV Series rotary vane pump is engineered to perform in the most challenging industrial settings. Each unit features: 

  • Flanged Motors for easy integration 

  • Dual Rotor Bearings for enhanced stability 

  • Oil/Air Heat Exchangers for optimal thermal control 

  • Fine Mesh Filters and Oil Separators for clean operation 

  • Gas Ballast Valves for moisture tolerance 

  • Versions Available for high oxygen content and vacuum drying 

Available as bare pumps or custom-engineered vacuum systems, the NRV Series adapts to your process requirements. 

Advantages of Rotary Vane Vacuum System

Incorporating an oil-lubricated rotary vane vacuum pump into your industrial vacuum systems can be a suitable and cost-efficient alternative to liquid ring vacuum pumps, depending on the application.
Along with notable benefits like high-efficiency performance with low cost of ownership, vane pumps in the NRV Series offer several design and performance features for a variety of industrial applications. 
Advantages of Rotary Vane Vacuum NASH
Nash Rotary Vane 1100

Vane Pumps - Features and Benefits

Nash specializes in the design of custom vacuum systems built for unique process requirements. Our rotary vane vacuum systems are based on standard components, but specifications and system design can vary depending on your requirements.  

 

  • Air-Cooled, Compact Design
  • O-Ring Sealed Compression Chamber
  • Long-life Vanes
  • Easy Maintenance 
  • Cost-Efficient & Affordable 
  • Quiet Operation
Vane Pumps - Features and Benefits image NASH
NRV100

The Nash Advantage

Nash offers unparalleled expertise in the design and manufacturing of vacuum pump systems. The NRV Series is available as a bare pump or as an incorporated component in a custom-engineered vacuum solution package suited for your unique process requirements. Offering a wide portfolio of bare pumps and custom engineered-to-order systems, you can count on Nash to provide a reliable and efficient vacuum system engineered for any demand of tough industrial applications. Find the right solution for your application needs by contacting Nash today.

With over a century of vacuum expertise, Nash offers: 

  • Global Parts Availability – Emergency-ready with 24-hour distribution 

  • Certified Field Service – Keep your systems running at peak efficiency 

  • Custom Engineering – Tailored vacuum systems for unique process needs 

  • Authorized Service Centers – Trusted support wherever you operate 

Rotary Vane Pump Applications & Industries

Rotary vane vacuum pumps offer versatile performance benefits within a wide range of applications and industries. NASH engineers commonly incorporate vane pumps into our custom, engineered-to-order vacuum systems for optimal performance within unique systems. Vane pumps are an increasingly popular and sustainable choice within the automation, plastics, laboratory service, food and beverage, metallurgy, and power industries.

How Do Rotary Vane Systems Work?

Rotary vane pumps operate by expanding volume at the inlet and compressing that volume at the exhaust. This is accomplished by placing the rotor eccentrically inside of the cylindrical housing, such that it is nearly touching the housing at the top, and is distanced from the bottom, as can be seen in the graphic. This rotor houses the vanes, and when it spins, centrifugal force causes these vanes to be slung out of the grooves they sit in until they contact the cylinder wall. When the vanes are in this extended position, they create an effective gas barrier that splits the pump cavity into multiple sections.
How Do Rotary Vane Systems Work image NASH
As they rotate, the sections exposed to the inlet port will continually be expanding, and the sections exposed to the exhaust port will continually be contracting. This causes the process gas to be drawn into the inlet, compressed within the pump, and expelled out the exhaust port. As the vanes are physically in contact with the cylinder wall, lubrication is required. This lubrication also aids sealing between the sections of the cylinder, as well as facilitates heat transfer away from the site of compression. These actions combine in a way that allows oil-lubricated rotary vane pumps to be capable of very low base pressures, and as such, they are suitable for applications requiring vacuum levels as low as 0.375 Torr.
Rotary Vane Systems Work NASH image 2