NES NL Series VACUUM PUMPS – Alternative When Replacing Nash Vacuum Pump

NES Vacuum pump

NES NL Series Vacuum Pumps: Reliable Replacements for Nash* CL Series

If you’re searching for a dependable, high-performance alternative to Nash CL Series liquid ring vacuum pumps*, the NES NL Series is engineered as a drop-in replacement—offering cost-effective, industrial-grade reliability. Whether you’re operating in the poultry industry, pulp and paper, power generation, or petrochemical sectors, NES pumps meet the challenge.

Built for Compatibility and Performance

The Nash CL Series vacuum pumps*, introduced in the 1930s by the Nash Engineering Company, have been a mainstay in demanding industrial applications for decades. Known for their conical porting design, these pumps reduce bearing loads by balancing the internal compression force against the rotor’s weight. The classic CL design also featured innovations such as:

  • Optional lobe purge systems to reduce erosion from solids

  • High liquid carryover tolerance

  • Side discharge configuration to reduce the risk of flooded starts

While original CL pumps are increasingly harder to source, NES NL Series pumps provide a reliable solution—either as new drop-in replacements or through rebuilt Nash CL Series units.

Why Choose NES NL Series as a Nash* CL Pump Replacement?

At Vacuum Pump Systems, Inc., we understand the critical role your vacuum system plays in uptime and efficiency. That’s why we recommend the NES NL Series as a proven, direct replacement for Nash CL pumps. Key advantages include:

  • One-to-one compatibility with Nash* CL Series installations

  • Cast iron construction with Teflon packing (standard)

  • Available sizes: NL-1000, 2000, 3000, 4000, 6000, and 9000 (up to 10,000 CFM)

  • Two-year factory warranty

  • Field-tested for performance and reliability

  • Optional upgrades: 304/316 stainless steel builds and Viton mechanical seals

  • Available from stock as bare pumps or engineered systems

Whether you’re looking for a new NES pump or a rebuilt Nash vacuum pump, we have options that preserve your budget while protecting your production schedule.

Industries We Serve

NES NL Series pumps are trusted across multiple sectors, including:

  • Poultry processing – robust vacuum systems for evisceration, chilling, and packaging

  • Food and beverage

  • Paper and pulp

  • Power generation

  • Petrochemical and general manufacturing

Our team works closely with maintenance engineers and procurement specialists to match your process with the right system.

Contact Us for a Quote

Need a rebuilt Nash* CL vacuum pump? Looking for a cost-efficient replacement with minimal installation downtime?

Call Vacuum Pump Systems, Inc. today or click the button on this page to request a custom quote for your application. We’re here to keep your operation running smoothly—with proven pump solutions and fast shipping from stock.

NES NL Series Vacuum Pump Features

  • ✅ Drop-in replacement for Nash* CL Series vacuum pumps

  • ✅ Cast Iron body with Teflon packing (standard)

  • ✅ Optional 304 or 316 Stainless Steel construction

  • ✅ Optional Viton mechanical seals

  • ✅ Factory-tested performance

  • ✅ Bare pump or integrated system options

  • ✅ Most models ship from stock

  • ✅ Backed by 2-year factory warranty

Call Us At 770-532-0260

NES Vacuum Pumps –

Getting the Job Done

Need to Replace a Nash CL Pump? NES Has You Covered*

If you’re repairing or replacing a Nash CL Series liquid ring vacuum pump*, the NES NL Series is a smart, cost-effective solution. These drop-in replacements are designed for full compatibility with the classic Nash CL pumps that have served reliably in industrial operations for decades.

NES NL Series pumps feature a proven single-stage, dual-cone design that mirrors the performance characteristics of the original Nash* CL Series—making them an ideal choice when uptime, reliability, and budget matter.

Available Models and Specs

NES NL pumps are available in the following sizes:

  • NL-1000

  • NL-2000

  • NL-3000

  • NL-4000

  • NL-6000

  • NL-9000 (handling up to 10,000 CFM)

Each pump is:

  • ✅ Built with cast iron construction and Teflon packing (standard)

  • ✅ Manufactured for plug-and-play installation in place of Nash CL Series pumps

  • ✅ Performance-tested at the factory to ensure vacuum efficiency and flow output

  • ✅ Backed by a solid 2-year factory warranty

Whether you’re working in poultry processing, food and beverage, pulp and paper, or general industrial environments, NES NL Series pumps offer a reliable, modern replacement for aging Nash vacuum pumps—without requiring major system changes.

Get Your Custom Quote
Call Us At 770-532-0260
NES vacuum Pumps

NL Series Specifications

NL Series Specs
discharge diagram - end
inlets and discharge for NES vacuum pumps

Let us help you decide about repairing you Nash Vacuum Pump or using reliable alternatives.

We can also provide you with a variety of Dekker pumps and pumps from the Vooner corporation. 

*Although we may help you by economically providing your company quality rebuilt Nash CL series vacuum pumps, Vacuum Pump Systems, Inc. is not an affiliate of Nash or the Gardner Denver Company.

*Nash is a registered trade mark of Gardner Denver Nash. Vacuum Pump Systems, Inc. has no affiliation with Nash, Nash Engineering, or Gardner Denver Nash. The information contain herein is provided as a convenience and for informational purposes only. Performance data are subject to manufacturing variation and test conditions including but not limited to atmospheric pressure, ambient temperature, seal fluid temperature, tolerances, and materials of construction. Performance of pumps constructed fully or partially of Stainless Steel may be lower due to larger clearance settings. All NES Company Inc. supplied products and recommendations or suggestions must be evaluated by the end-user to determine applicability and suitability for any particular use.