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LL4 Series

High-Abrasives Content Grouting and Slurry Pump

Liberty Series Icon The LL4 Progressive Cavity Pump is for highly abrasive and wearing applications such as grouting and slurry mixtures with a high abrasives content of up to 50% in suspension. The Liberty LL4 parts are direct-fitting aftermarket replacements that interchange with the *Moyno® L4, *Tarby® TL4 and *Continental® CL4 models.

The LL4 is a standard flanged pump design manufactured with cast iron or 316 stainless steel casings and designed in 1, 2, and 3 stages for 75, 150, and 225 psi discharge pressures pumping from 0-24 GPM. (2.02 Gallons per 100 revolutions).

The LL4's comes with a hardened pinned joint-drive assembly that ensures increased durability during rough pumping applications. The LL4 Rotors are typically tool steel or 316 stainless steel with a hard chrome plating, ideal for thickened grout an grouting slurries. All other wetted parts are either carbon steel or 316 stainless steel. Stators are available in many elastomer materials such as buna, natural rubber, epdm and viton depending upon application.

If you do plan on using this pump for heavy slurries with solids content, be sure to talk to your Liberty representative to get the right rotor and stator for your application.

The standard seal design is a set of packing rope; however, mechanical seal assembly retrofits are readily available. The LL4 represents one of the most effective choices in PC pumps today for the pumping of thickened liquids with high abrasives content and liquid slurries.

Contact a Liberty Process representative today for more information about the LL4 Series.


Liberty Series - LL4 - Technical Data


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The Liberty LL4 Series Progressive Cavity Pump.

Liberty LL4 Series Pump Parts

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Pumps available online

  • Single Stage Progressive Cavity Pump Buna Nitrile Stator/ CP Steel Rotor/ Packing Seal from Liberty Process Equipment.
  • Two Stage Progressive Cavity Pump Buna Nitrile Stator/ CP Steel Rotor/ Packing Seal from Liberty Process Equipment.
  • Three Stage Progressive Cavity Pump Buna Nitrile Stator/ CP Steel Rotor/ Packing Seal from Liberty Process Equipment.

LL4 Pump Parts Available Online

CDQ LL4 Pump Stators available online

SSQ LL4 Pump Stators available online

CDQ LL4 Pump Rotors available online

SSQ LL4 Pump Rotors available online

LL4 Pump Wetted Parts available online

LL4 Pump Frame Assembly available online

LL4 Pump Drive Shaft Assembly available online

LL4 Pump Seals & Bearings available online

LL4 Pump Hardware available online

LL4 Pump Part Kits available online

*Liberty Process Equipment, Inc. is not affiliated with nor distributor for Seepex®, Allweiler®, Moyno®, Tarby®, Netzsch®, or Continental Inc.® All referenced product names, brands, models, or part numbers is solely for identification purposes. Seepex® is a registered trademark of Seepex®. Moyno® and Tarby® are registered trademarks of Robins and Myers® and NOV®, Netzsch® Incorporated is a registered trademark of the Netzsch® Group, Allweiler® is a registered trademark of Colfax® Corporations Continental® Pumps is a Trademark of Continental® Ultra Pumps.