Lightnin

Proven Mixing Technology for Demanding Applications

Brand Legacy & Heritage

Since 1923, Lightnin has combined engineering innovation with deep application expertise to solve some of the industry’s most complex process challenges. From pioneering advances in impeller technology and mixer design to developing proprietary gear drives and process optimization tools, Lightnin has continuously advanced mixing performance across industries worldwide.

An Application-First Approach

Successful mixing requires understanding fluid behavior, process objectives, vessel geometry, rheology, power requirements, and equipment design. Rather than adapting standard equipment to fit an application, Lightnin engineers mixing systems around the process itself, using:

  • Application engineering
  • Computational fluid dynamics (CFD)
  • Pilot and full-scale process testing
  • Advanced impeller technology
  • Purpose-built gearbox design
  • Global engineering support
  • Field service and aftermarket programs

What Lightnin Mixers Do

  • Blending: Produce consistent product quality while reducing batch variability.
  • Solids Suspension: Keep particles suspended for improved reaction efficiency and product consistency.
  • Gas Dispersion: Improve oxygen transfer and gas-liquid contact for biological and chemical processes.
  • Heat Transfer: Increase heat transfer efficiency through optimized fluid movement.
  • Chemical Reaction: Improve mass transfer and reaction kinetics with engineered impeller systems.
  • Flocculation & Coagulation: Deliver controlled mixing for municipal and industrial water treatment.
  • Storage Tank Mixing: Maintain homogeneity while minimizing sedimentation and energy consumption.
  • Fermentation: Support sanitary, aseptic mixing for pharmaceutical and biotechnology production.

Lightnin Product Offerings from Siewert Equipment & F.R. Mahony

  • Top Entry Mixers: Efficient blending, agitation, and process control.
  • Side Entry Mixers: Efficient tank blending and fluid agitation.
  • In-Line Mixers: Continuous blending, dispersion, and process efficiency.
  • Portable Mixers: Flexible blending, agitation, and batch processing.
  • Magnetic Mixers: Sterile blending and hygienic process performance.
  • Impellers (Axial, Radial, and Circular Flow): Efficient circulation and blending, high-shear mixing and gas dispersion, and industrial mixing performance.
  • Surface & Subsurface Aeration Mixers: Improve oxygen transfer and basin mixing efficiency in municipal wastewater treatment.
  • Mixing Design & Consulting Services: Access to application engineers and testing capabilities to evaluate existing systems and identify performance improvements.
  • Aftermarket Services: Gearbox replacement exchange, conversion mixer exchange, reducer mixer exchange, and support for Lightnin and competitive mixer models.
  • OEM Replacement Parts: Genuine Lightnin OEM parts for optimal performance, reliability, and equipment longevity.

Industries That Rely on Lightnin Mixers

Water & Wastewater Treatment • Chemical Processing • Mining • Oil & Gas • Power & Energy • Food & Beverage • Pharmaceutical • Biofuels • Personal Care • Pulp & Paper • And more

Why Lightnin?

  • Mixing solutions engineered around your process
  • Reduced energy consumption and lower total cost of ownership
  • Minimized downtime and reduced operational risk
  • Mixer-specific gearbox technology and true drywell protection
  • Continuous investment in engineering, testing, and innovation
  • Proven durability in demanding environments

FAQ: Lightnin® Mixers

What are Lightnin mixers used for?

  • Lightnin mixers are used for blending, solids suspension, gas dispersion, heat transfer, chemical reactions, flocculation, storage tank mixing, and fermentation across water and wastewater treatment, chemical processing, mining, energy, food and beverage, pharmaceutical, and biofuel applications.

What types of Lightnin mixers are available?

  • Lightnin offers top-entry, side-entry, in-line, portable, and magnetic mixers, along with axial, radial, and circular flow impellers. Surface and subsurface aeration mixers are available for wastewater applications.

Are Lightnin mixers suitable for wastewater treatment plants?

  • Yes. Lightnin mixers are widely used in municipal wastewater treatment for aeration, solids suspension, flocculation, and basin mixing. Their rugged design is built for continuous-duty applications.

Do Lightnin mixers support sanitary and hygienic processes?

  • Yes. Lightnin magnetic mixers and sanitary designs support sterile, hygienic blending for pharmaceutical, biotech, and food and beverage processes.

Can existing mixing systems be retrofitted with Lightnin mixers?

  • Yes. Siewert Equipment and F.R. Mahony can evaluate your existing system and recommend retrofit or upgrade options to improve performance, efficiency, and reliability without a full system replacement.

What aftermarket services are available for Lightnin mixers?

  • We offer gearbox replacement, conversion mixer exchange, reducer mixer exchange, OEM replacement parts, and service support for both Lightnin and competitive mixer models.

Does Lightnin provide mixing design and consulting services?

  • Yes. Lightnin’s application-first approach uses CFD modeling and pilot and full-scale testing to analyze your process and identify opportunities for optimization.

What territories do Siewert Equipment and F.R. Mahony support?

  • Siewert Equipment supports all of Upstate New York. F.R. Mahony serves New England, including Massachusetts, New Hampshire, Maine, Rhode Island, Connecticut, and Vermont.

Where does Lightnin manufacture?

  • Lightnin designs and manufactures industrial mixers, agitators, impellers, portable mixers, sanitary mixers, top-entry mixers, side-entry mixers and complete engineered mixing systems for industrial processing applications.

What makes Lightnin Different?

  • Lightnin combines over 100 years of mixing expertise with proprietary gearbox technology, advanced impeller design, application engineering, computational modeling, pilot testing and global service support to engineer solutions around each customer’s process.

How do I get help selecting the right Lightnin mixer?

  • Our application engineers will work with you to understand your process requirements and recommend the best-fit mixing solution for your system.

Siewert Equipment & F.R. Mahony offers Lightnin Mixers in the following territories:

  • New York (serving all Upstate NY) through Siewert Equipment, with offices and service centers in Rochester & Albany.
  • New England (serving MA, NH, ME, RI, CT, and VT) through F.R. Mahony, with offices in Rockland and a service center in Oxford, MA.

For more information, follow this link to view our Lightnin Mixer customer testimonials. 

Experts in Mixing Technology


Siewert Equipment and F.R. Mahony have been leading experts in pump systems, process equipment, and mixing technology since 1949. Our application engineers will be able to recommend the best-fit product for your specific application so that you get the mixing system that is suited for your needs. 

Learn More About Lightnin

Watch these Lightnin mixing technology videos on our Siewert Equipment YouTube playlist:

Contact us below with any questions.