Pumps & Fluid Handling replacement guide

Identify centrifugal, positive-displacement, sump, metering, transfer, and specialty pumps by model, duty point, fluid, materials, and connection details.

Evidence boundary. Pump replacement is a system decision, not a model-number-only decision. Compare the hydraulic duty and the complete mechanical, material, and electrical interface.

Items covered01 · 17 component types

Centrifugal pumps
Positive-displacement pumps
Gear pumps
Diaphragm pumps
Peristaltic pumps
Metering pumps
Sump pumps
Sewage pumps
Chemical pumps
Transfer pumps
Booster pumps
Multistage pumps
Progressive-cavity pumps
Magnetic-drive pumps
Pump impellers
Pump cartridges
Pump mechanical seals

What to capture02

Pump manufacturer, model, and serial dataRecord this before searching for a substitute.

Flow, head or pressure, and speedRecord this before searching for a substitute.

Fluid, viscosity, temperature, concentration, and solidsRecord this before searching for a substitute.

Connection size, orientation, and materialsRecord this before searching for a substitute.

Motor, seal, impeller, and control detailsRecord this before searching for a substitute.

What must match03

Duty point and pump curveConfirm it against the original equipment, duty, and source documentation.

Fluid compatibility and temperatureConfirm it against the original equipment, duty, and source documentation.

NPSH and system conditionsConfirm it against the original equipment, duty, and source documentation.

Materials, seals, and elastomersConfirm it against the original equipment, duty, and source documentation.

Electrical, mounting, and connection geometryConfirm it against the original equipment, duty, and source documentation.

Common searches04

What pump replaces this model?

How do I select a replacement pump?

What pump spare part fits this unit?

Can a different pump meet the same duty point?

Authoritative starting points05

Grundfos pump replacement guidehttps://www.grundfos.com/us/support/how-to-guides/how-to-find-a-suitable-pump-replacement Grundfos pump spare-parts guidehttps://www.grundfos.com/us/support/how-to-guides/how-to-find-the-right-pump-spare-parts

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Related lookup guides1 workflow

pump replacement checklist

Pump replacement checklist: what must match

Capture the duty point and fluid conditions first, then verify hydraulic, mechanical, electrical, material, and control requirements.

Open guide →

Search the verified catalog Identify an unknown part