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ADPL/ANPL Metering and Dosing Progressive Cavity Pumps


We offer several series of Small Progressive Cavity Metering and Dosing Pumps which are ideal for low flow, high accuracy pumping applications in flows from .02 up to 9.5 GPM and at discharge pressures up to 450 PSI.. Shanley stocks 3 series of pumps, the ADPL, ANPL and ML series.

The most common application for these pump is for polymer feed to treat wastewater but can also be used in a variety of applications where low flow and high volumetric accuracy are required.

All ADPL, ANPL and ML pumps are available in cast iron and more popular 316 Stainless Steel materials of all wetted parts and are ready to ship same-day from our facility. A wide variety of motors and controls are available for the ADBPL to meet your exact control needs and budget.

ADPL and ADBPL Progressive Cavity Metering and Dosing Pumps

The ADPL Series of Small Progressive Cavity Metering and Dosing Pumps offers an ideal solution to many low-flow pumping applications that require high accuracy in volume control at an affordable price. For liquids that are low-viscosity to high-viscosity and abrasive liquids it provides a pumping solution that is much more reliable than other types of metering pumps available on the market today.

Small piston-type metering pumps with check valves have inherent problems of pulsation, sticking and ball check valves sticking and failing. The Liberty ADPL Series solves all of these problems with pulsation free flow, no check valves required and able to handle viscosities up to 20,000 CP. In addition, with its high-accuracy and repeatability it offers a cost-effective alternative to higher-priced "accurate" metering pumps.

The ADBPL pump series offers all the benefits in an accurate metering pump as the ADPL, but in a close-coupled design. This enables you to have a more compact pump package where space is at a premium. It also eliminates the need for a baseplate, coupling, coupling alignment, and coupling guard. Available in 3 sizes, all ADBPL pumps come in three stage designs to handle discharge pressures up to 175 PSI.

Liberty ADP & ANP Pump Dimensions

ANPL and ANBPL Progressive Cavity Metering Pumps

The ANPL and ANBPL Series is a rugged series of medium sized low flow progressive cavity metering and dosing pumps available immediately from our inventory at Liberty Process Equipment. This pump is rated up to 9.5 GPM and at discharge pressures up to 350 psi in our 4 range design. All Pumps are offered in cast iron or standard 316 Stainless Steel.

All Pumps are offered with our standard 1" NPTF connections or optional 1" 150# RF Flanges. Stators are available in Buna Nitrile, Viton® and also in PTFE Teflon for the highest standards in corrosion resistance.

The close-coupled ANBPL is a great alternative where space is a concern, offered in designs to accommodate 56C and 145TC Frame Motors. Shanley Pump and Equipment, Inc. can offer a drive and control option to meet your needs and budget.

From a simple, fixed speed motor to a DC or variable frequency drive controlled pump unit we can offer it and have it shipped to you same day.

ADPL Alternative Pump View

Liberty ADP Pump Cutaway View Liberty ADP Pump Side View Liberty ADP Pump Top View

ANPL Alternative Pump View

Liberty ANP Pump Top View Liberty ANP Pump Angled View Liberty ANP Pump Side View

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LIBERTY Pump Series quick links

Metering and Dosing PC Pumps

ADPL/ANPL Metering and Dosing Progressive Cavity Pumps


  • Progressive Cavity Metering and Dosing PumpPacking SealClockwise Impeller Rotation
  • Progressive Cavity Metering and Dosing Pump
  • Packing Seal
  • Clockwise Impeller Rotation

LIBERTY ADPL/ANPL Series Materials

  • 316 Stainless Steel PumpSteel Pump Components
  • 316 Stainless Steel Pump
  • Steel Pump Components

LIBERTY ADPL/ANPL Series Industries

  • Wastewater Treatment Industry PumpingWater Supply and Treatment PumpingChemical Industry PumpingFertilizer Industry Pumping
  • Wastewater Treatment Industry Pumping
  • Water Supply and Treatment Pumping
  • Chemical Industry Pumping
  • Fertilizer Industry Pumping

LIBERTY ADPL/ANPL Series Applications

  • Polymer Injection Pumping ApplicationsFiltration System Pumping ApplicationsWatewater Treatment Pumping ApplicationsViscous Fluids Pumping Applications
  • Polymer Injection Pumping Applications
  • Filtration System Pumping Applications
  • Wastewater Treatment Pumping Applications
  • Viscous Fluids Pumping Applications

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*Shanley Pump Group 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.