Grundfos MAGNA3 Screwed Circulator Pumps (25 & 32, 180mm)
Grundfos MAGNA3 25-120 180mm Circulator Pump 97924248
- Established 1975
- Trusted by thousands of customers
The Grundfos MAGNA3 25-120 (part no. 97924248) is a single-head, cast iron, screwed (union) circulator pump for heating, cooling and ground-source systems. It gives up to 12 m head, has a 180 mm port-to-port length and runs on a single-phase 230 V supply.
MAGNA3 adapts itself to the system with AUTOADAPT, measures flow and heat energy with built-in sensors, and connects to a BMS with an optional CIM module.
More about this product
The Grundfos MAGNA3 25-120 180 1x230V PN10 (Grundfos part number 97924248) is a single-head, cast iron, screwed (union) circulator pump from the Grundfos MAGNA3 range. It delivers up to 12 m head, fits a 180 mm port-to-port gap and connects with a G 1½” union thread. Power input is 9–185 W, so it uses only the energy the system needs at any moment.
MAGNA3 25-120 specifications
| Model | MAGNA3 25-120 180 1x230V PN10 |
|---|---|
| Grundfos part number | 97924248 |
| Pump type | Single-head, cast iron, screwed (union) circulator |
| Maximum head | 12 m |
| Rated duty point | 7.9 m³/h at 5.9 m |
| Port-to-port length | 180 mm |
| Pipe connection | G 1½” union thread |
| Pressure rating | PN10 (max. operating pressure 10 bar) |
| Supply | 1 x 230 V |
| Power input P1 | 9–185 W |
| Current | 0.09–1.56 A |
| Energy Efficiency Index (EEI) | 0.18 |
| Liquid temperature | -10 to 110 °C |
| Pump housing | Cast iron EN-GJL-200 |
| Impeller | PES 30%GF |
| Insulation class | F |
| Enclosure class | X4D |
| Net weight | 4.8 kg |
| Warranty | 2 years (Grundfos) |
Figures from the Grundfos data sheet for 97924248. The pump curve is on the data sheet.
What the model code means
| Code | Meaning |
|---|---|
| MAGNA3 | MAGNA3: AUTOADAPT, built-in sensors, heat energy monitor and fieldbus BMS options |
| 25 | Nominal pipe size DN25 |
| 120 | Maximum head 12 m (code is in decimetres) |
| 180 | Port-to-port length 180 mm |
| 1x230V | Single-phase 230 V supply |
| PN10 | Pressure rating PN10 |
Features
Applications
- Wet heating systems: radiators, underfloor heating and air-handling coils
- Chilled water and air-conditioning circuits (liquid down to -10 °C)
- Ground-source heat pump and solar heating circuits
- Light commercial buildings and larger domestic systems
Questions about this pump
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sales data PDFDownload
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data sheet PDFDownload
Standard delivery:
Standard delivery is free on most orders. Some items may incur a delivery charge depending on weight, size or value. Any applicable charge will be displayed at checkout.
Deliveries will typically be made between 7am and 6pm, Monday to Friday (excluding public holidays).
Next day delivery:
Next working day delivery is available for a £16.50 + VAT delivery charge.
Orders must be placed before 12 noon to qualify for next working day delivery. Orders placed after 12 noon on Thursday but before noon on Friday will be delivered the following Monday. Orders placed after 12 noon on Friday will be delivered on Tuesday.
Pallet/Large/Difficult items:
Some large, heavy or difficult to transport items may incur an additional delivery charge. Please contact us for a delivery quote before ordering.
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Frequently Asked Questions
Quick answers to common questions about the Grundfos MAGNA3 25-120 180mm Circulator Pump 97924248. For technical specifications, see the product details above; for sizing or installation advice, contact our team. If you have any other questions, we're happy to help.
What is the Grundfos MAGNA3 25-120 used for?
The Grundfos MAGNA3 25-120 is an intelligent circulator designed for heating, cooling and hot water circulation systems.
What does AUTOADAPT do on a Grundfos MAGNA3 pump?
AUTOADAPT automatically analyses system requirements and adjusts pump performance to help provide efficient operation without continual manual adjustment.
Why choose a MAGNA3 variable-speed circulator?
The MAGNA3 combines variable-speed control with intelligent system monitoring, allowing pump output to adapt to demand and helping reduce unnecessary energy consumption.
What types of Grundfos pumps are available?
Grundfos offers circulators, booster pumps, borehole pumps, drainage pumps and other solutions for domestic and commercial systems.
How do I identify the correct Grundfos pump model?
Use the model name and product number on the pump nameplate, then check the electrical, hydraulic and connection specifications.
Can a Grundfos pump improve household water pressure?
A suitably selected Grundfos booster system can improve water pressure or flow, subject to the property’s water supply and installation requirements.