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What is a Non-Clog Pump?

Learn about what features help prevent clogs in pumps and the advantages non-clog pumps can bring to high solids pumping applications.
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A non-clog pump generally refers to pumps with a 100% recessed impeller or specially designed open rotor. This design allows the passing solid objects equal to the width of the discharge of the pump. Non-clog pumps are highly sought after in applications that require transporting high solids material such as mining, sewage treatment, oil/gas industry, dredging and many more. While centrifugal pumps are great at moving clean water, adding solids or other abrasives can be destructive and reduce the life of the pump, ultimately causing downtime and loss of production.

This article includes:

  • Benefits of a Non-Clog Pump
  • EDDY Pump – Open Rotor Design
  • Ability to Pump High Viscosity Materials
  • Pumping High Specific Gravity
  • Pumping High Abrasive and Corrosive Material

Watch the video below to discover what makes the EDDY Pump the most premier non-clog pump on the market.

The EDDY Pump is a patented design that makes it completely different from any Centrifugal, Vortex or Positive Displacement Pump. The EDDY Pump does not have an impeller but is instead equipped with a geometrically designed rotor. When this rotor spins, it harnesses the power of a tornado within hydrodynamics, creating a perfectly synchronized Eddy Current. It is this Eddy Current that agitates the material and moves it through the pump without ever having issues due to tolerances or clogging found in traditional pumps.

The EDDY Pump’s completely open rotor design inherently makes it the best non-clog pump on the market. The EDDY Pump performance exceeds all other pumps for handling heavy, debris-laden fluids and slurries.

Benefits of a Non-Clog Pump

Solids Handling Ability

The EDDY Pump features an open rotor design with a recessed rotor that allows the pump to pass very large solids, such as rocks and large particle laden fluids without damaging or clogging the pump.  EDDY Pump offers pumps that range from 1-inch through 12-inches in size.  The EDDY Pump can pass solids through the pump that are almost the diameter of the pump inlet porting; a 12-inch pump can pass solids that are almost 12-inches in diameter.

EDDY Pump’s Open Rotor Design

Centrifugal pumps designed with critical tight tolerances which can cause objects to become stuck between the pump casing wall and the impeller. If this happens repeatedly, it will cause maintenance problems and damage to the pump.

EDDY Pump’s open rotor design allows passage of large rocks, debris, rags, and other fibrous materials that clog conventional pumps. This ensures longer uptime and fewer maintenance costs over the life cycle of the pump.


Ability to Pump High Viscosity Materials

The EDDY Current the pump creates at the inlet of the pump assists with drawing viscous fluid in through the inlet port of the pump and into the volute.  This effect on the fluid is unique and some of what separates the EDDY Pump from other conventional pump technologies.  When pumping high viscosity thixotropic materials, the rotor agitates the fluid which helps to cause the fluid to more effectively flow through the discharge piping.  This shear thinning effect to the fluid helps to overcome friction losses in the discharge piping of the pump and results in maintaining a more steady flow.  Being that an EDDY Current is unique to the EDDY Pump, conventional pumps struggle with pumping high viscosity fluids because of the difficulty drawing the fluid into the pump.  This is what separates the EDDY Pump from other pumps in the market.


Pumping High Specific Gravity

The EDDY Pump is excellent at moving heavy materials through long pipelines. The EDDY Pump creates a turbulent flow that helps keep the heavier and abrasive materials in suspension. Maintaining suspension assists the material in moving along the pipeline downstream of the pump due to less settling inside of the piping.

Centrifugal pumps create a laminar flow which allows the material to settle at the bottom of the piping.  Material settling at the bottom of the piping can interfere with the effective flow of the fluid and also cause greater wear inside the bottom portion of the piping.


Pump High Abrasive / Corrosive Material

EDDY Pump’s Performance does not rely on maintaining critical tolerances between the rotor and the volute. With the proper choice of materials for the pump case and rotor, the EDDY Pump is the perfect solution for pumping abrasive and corrosive material that often cause significant issues for other pumps.

Centrifugal pumps are designed with critical tight tolerances that must be maintained if consistent flow rate and efficiency is desired.  When pumping abrasive fluids these tight tolerances can diminish due to wear at the impeller.  When pumping corrosive material, increased wear due to the corrosive nature of the fluid can also be experienced.  This wear can increase the spacing between the impeller and the inside of the pump casing which creates slip, reduces pump efficiency, and begins to reduce the flow rate.

When choosing an EDDY non-clog pump for your abrasive and corrosive applications, you can experience less clogging, increased uptime, lower maintenance costs, and greater production.

NEW – Best Applications – Industries Most Served

The EDDY Pump Corporation is a premier manufacturer of pumping and dredging equipment.  If you are pumping or dredging slurry, high solids, extremely viscous material, paste, high abrasives (sand & gravel) and material filled with solids, then you found the best suited product for the job.  Go to:  https://eddypump.com/  or Call Us!

Mining, Fly Ash, Coal Ash, Oil, Fracking, Gas, Wastewater, Pulp and Paper, Chemical, Energy, Water Municipalities, Irrigation, and Dredging Companies.  For Access to Complete Product Line Go to: https://eddypump.com/products/

Order or Get Selection Help

Let our sales or engineering support help in your grit pump and wastewater equipment selection. Call (619) 258-7020

Why EDDY Pumps Are Better – Highlights

This video shows how EDDY Pump transports high slurry and abrasive materials. Featured dredge pump equipment includes the Remote Operated Subdredge, Diver Operated Pump and a Excavator Attachment Dredge Pump.



Dredge Manufacturer of Premier Industrial Pumps and Dredge Equipment