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Grundfos MAGNA3

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GGrundfos

Circulator Pump, 3/4 HP

Mfr # MAGNA3SKU GRU-MAGNA3-1

$1,856.99/ea

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Key Features

  • Max flow rate308 GPM
  • Max head59 ft
  • Motor horsepower3/4 HP
  • Casing / wetted materialCast iron or stainless steel
  • Seal typeSealless (wet-rotor)
  • Mounting / orientationInline
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Product Information & Specifications

Product Information

ManufacturerGrundfos
Mfr Model #MAGNA3
FlowSpec SKUGRU-MAGNA3-1

Dimensions

Inlet size2 in
Discharge size1.5 in
Dimensions (L×W×H)13 × 10 × 11 in

Details

Weight30 lbs
Max head59 ft
Duty typeContinuous
Seal typeSealless (wet-rotor)
Max pressure4 PSI
Max flow rate308 GPM
CertificationsCE, UL
Voltage / phase230V 1-phase
Motor horsepower3/4 HP
Max solids handlingN/A — clear liquids only
Max fluid temperature230 °F
Mounting / orientationInline
Casing / wetted materialCast iron or stainless steel

Description

The MAGNA3 is a wet-rotor circulator built around a permanent-magnet ECM motor and an integrated differential-pressure sensor, so it modulates flow to the system's real demand. It's a go-to choice for variable-flow HVAC and district-energy loops where energy savings and quiet operation matter.

The Grundfos MAGNA3 is a circulator pump offering max flow rate of 308 GPM, max head of 59 ft, motor horsepower of 3/4 HP, casing / wetted material of Cast iron or stainless steel, seal type of Sealless, and mounting / orientation of Inline.

Ratings & Reviews

5.0(1 review)
  • Exactly as speccedSample

    Dropped straight into our system and has run flawlessly. Sizing help from the team was spot on.

    Jordan R., Municipal Water District · Aug 9, 2026

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Documentation

Documents open on the manufacturer's site.

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