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Ferroli Spring Expansion Vessel 39840770

Ferroli

Ferroli Spring Expansion Vessel 39840770

Spring expansion vessel for Ferroli Domina, Domitop, Modena, F24E, F30E and Tempra appliances, part number 39840770.

At a glance

  • Also known as 3510091
Manufacturer part no.
39840770
GC number
E76-116
Showing prices

£1.72

£1.43 ex. VAT · VAT at 20%

Available to order · 7 working days
Available to order · 7 working days
Not certain it's the right part? The technical team verifies fitment before dispatch — no charge, and it stops a second trip.Call the technical teamSend a technical question

Same-day dispatch

Ordered by 4pm Mon–Fri, 10:30am Sat.

30-day returns

Unused, in original packaging.

What it is

The Ferroli spring expansion vessel, part number 39840770, is a sealed pressure vessel fitted inside the appliance casing. It absorbs the expansion of water as the system heats, limiting the pressure rise across the heating circuit. It is used across a number of Ferroli Domina, Domitop, Modena, F24E, F30E and Tempra models.

Signs this part needs replacing

  • System pressure rises sharply as the appliance heats up
  • Pressure relief valve discharges water during normal operation
  • Pressure gauge needle swings widely between cold and hot states
  • Repeated loss of system pressure with no visible leak on the pipework
  • Water present around the vessel connection or on the appliance base

Before you order

  • Check the model and product code on the appliance data badge against the fit list above
  • Confirm the existing vessel's part number matches 39840770 before ordering
  • Verify the vessel connection and mounting arrangement on your appliance
  • Check the system charge pressure and pressure relief valve operation as part of the same diagnosis

Not sure which part?

Search by part number, product name or brand — our technical team confirms fitment before anything is dispatched.