Grundfos Magna1D 65-150F 97924412 Twin-Head Circulating Pump #4784 USED

GRUNDFOS MAGNA1D 65-150F – Twin-Head Circulating Pump 97924412 #4784 (USED)

This listing is for a Grundfos MAGNA1D twin-head wet-rotor circulator pump. MAGNA1D combines the energy-efficient permanent-magnet motor and integrated frequency control of the MAGNA1 family with dual (twin) pumping heads for redundancy or parallel operation in larger systems.

MAGNA1D’s design integrates motor and electronics in a maintenance-free wet-rotor assembly. The pump communicates wirelessly with the Grundfos GO Remote app and supports basic monitoring and control without separate external drives.

Condition: supplied as a used pump. The unit shows cosmetic wear consistent with previous service use. It is inspected prior to dispatch and confirmed free-turning and operational.
Guarantee: supplied with our 6-month guarantee.

• Pump type: MAGNA1D twin-head wet-rotor circulator
• Connection: DN65 DIN flanges (PN6/10)
• Port-to-port length: 340 mm
• Electrical supply: 1 × 230 V
• Motor: 4-pole permanent-magnet synchronous (PM)
• Control: integrated frequency converter with user interface
• Communication: Grundfos GO Remote compatible

Need help confirming suitability?
Call us on 01803 220416 for technical advice.

Manufacturer product page

Full technical specifications and performance curves can be viewed on the official Grundfos product page:
View Grundfos MAGNA1D 65-150F (97924412) – Variant details

Frequently Asked Questions

Why choose a MAGNA1 instead of a MAGNA3?

The MAGNA1 is intended for users who need a high-efficiency, reliable circulator without advanced BMS features. Compared with MAGNA3:

• MAGNA1 offers simpler setup and operation with lower cost
• Ideal where only basic control modes are required
• Still provides major energy savings via PM motor and integrated drive
• Includes fault relay and digital start/stop input

Choose MAGNA3 when you need:

• Advanced flow estimation and heat-energy monitoring
• Full building management communication (BACnet/LON)
• Multi-pump cascade and advanced control functions

For straightforward HVAC circulation where simplicity and efficiency are the priority, MAGNA1 is usually the better value choice.

What’s the difference between MAGNA1 and MAGNA1D?

Both use the same high-efficiency permanent-magnet motor and integrated electronic drive, but:

• MAGNA1 is a single-head circulator for standard heating/cooling loops
• MAGNA1D provides a twin-head arrangement for redundancy or parallel flow in larger systems

Is the pump maintenance-free?

Yes. MAGNA1D uses a canned-rotor wet-rotor design with no mechanical seal, reducing routine maintenance and delivering quiet operation.

Can this replace older fixed-speed pumps?

Yes — subject to hydraulic match. The variable-speed electronics in a MAGNA1D can provide major energy savings compared with a fixed-speed pump, but you should confirm system duty requirements and connectivity before replacing older gear.

About Our Stock

Stock code: #4784
We specialise in supplying quality pumps and equipment. This unit is supplied as a used pump, inspected prior to dispatch and supplied with a 6-month guarantee.