Grundfos UPCD 40-120 F Flanged Pump Heating Circulator 415v Dn40 96406323 #4881 USED

Grundfos UPCD 40-120 F Flanged Twin-Head Heating Circulator Pump – 415V DN40 (96406323) #4881 USED

This listing is for a Grundfos UPCD 40-120 F complete twin-head flanged heating circulator pump, part number 96406323. It is a used original-style Grundfos wet-rotor circulator designed for heating and commercial building-services circulation duties.

Condition: supplied as a used pump. The unit has been previously installed/used and may show cosmetic wear consistent with service use. It is inspected prior to dispatch. Guarantee: supplied with a 6-month guarantee.

• Pump type: complete twin-head heating circulator pump
• Grundfos part number: 96406323
• Model reference: UPCD 40-120 F
• Connection: DN40 flanged
• Electrical supply: 3-phase, 415 V, 50 Hz
• Pump style: glandless wet-rotor circulator
• Configuration: twin-head / duty-standby style pump assembly
• Use: heating circulation and commercial building-services circulation

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

Reference documentation

Archived UPC / UMC range information can be viewed here:
View archived Grundfos UMC / UPC in-line circulator data

Compatibility guidance

This pump should be selected by matching the existing Grundfos model, voltage, flange size, hydraulic duty and installation dimensions. If replacing an existing UPCD 40-120 F, please compare the full pump nameplate and pipework arrangement before ordering.

• Check the existing pump is a UPCD 40-120 F or suitable equivalent
• Confirm the electrical supply is 3-phase 415 V, 50 Hz
• Confirm the pipework is suitable for a DN40 flanged circulator
• Check the duty point against the existing system requirement
• If unsure, send us photos of the existing pump nameplate and installation

Typical applications

• Heating circulation systems
• Commercial building-services circulation
• Plant-room heating circuits
• Replacement of existing UPCD 40-120 F installations
• Like-for-like replacement where pipework changes are not desired

Frequently Asked Questions

Is this a complete pump?

Yes. This listing is for a complete Grundfos UPCD twin-head circulator pump, not just a replacement pump head.

What is the difference between UPC and UPCD?

UPC generally refers to the single-head circulator version, while UPCD refers to the twin-head version. A twin-head pump is often used where duty/standby operation or increased service resilience is required.

Will this replace my existing UPCD 40-120 F?

It may be suitable as a like-for-like replacement if your existing pump is a compatible UPCD 40-120 F and the electrical supply, flange size, installation dimensions and hydraulic duty match. Please compare the pump nameplate and site pipework before ordering.

Why use an original-style UPCD pump instead of a modern high-efficiency replacement?

An original-style UPCD pump can be useful where the existing system was designed around the older Grundfos UPC / UPS wet-rotor circulator style. If the pipework, hydraulic duty and electrical supply already match, replacing like-for-like can be simpler and less disruptive than redesigning the installation around a modern high-efficiency circulator.

Some customers also prefer repairing or replacing older Grundfos circulators because the original installation has already proved reliable on site. A modern replacement may still be the better option for an upgrade, but the pipework dimensions, flange standard, electrical supply, control arrangement and hydraulic duty must all be checked carefully.

Does this pump have a mechanical shaft seal?

No. UPC / UPCD circulators are glandless wet-rotor pumps, so they do not use a conventional mechanical shaft seal like a dry-rotor pump.

Is this a modern high-efficiency circulator?

No. This is an original-style Grundfos UPCD circulator. It is suitable where a like-for-like replacement is preferred, but it is not the same as a modern electronically controlled high-efficiency circulator such as a MAGNA-style pump.

Who should install this pump?

Installation should be carried out by a competent heating engineer or electrician. The pump must be isolated electrically and hydraulically, installed with suitable gaskets and valves, and wired according to the pump nameplate and applicable electrical regulations.

About Our Stock

Stock code: #4881
We specialise in supplying used and surplus pumps, pump heads and pump spares. This item is inspected prior to dispatch and supplied with a 6-month guarantee.