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Viessmann Expansion Pipe 7829297

Viessmann

Viessmann Expansion Pipe 7829297

Expansion pipe, part 7829297, for Viessmann Vitodens 050-W, 100-W and 200-W combi boilers.

At a glance

  • Part type: expansion pipe
  • Also known as 2321050
Manufacturer part no.
7829297
Showing prices

£59.39

£49.49 ex. VAT · VAT at 20%

Available to order · 1 working day
Available to order · 1 working day
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 PIPE - EXPANSION is a Viessmann expansion pipe, part number 7829297, used in the expansion vessel circuit of Vitodens gas boilers. It carries water between the expansion vessel connection and the boiler's heating circuit on the combi models listed below. The part is specific to the Vitodens 050-W, 100-W and 200-W ranges.

Signs this part needs replacing

  • System pressure drops repeatedly and needs topping up
  • Pressure rises sharply when the boiler heats up and falls again when it cools
  • Water weeping or staining around the expansion vessel pipe connection
  • Corrosion or scale visible on the pipe
  • Discharge from the pressure relief valve with no other obvious cause

Before you order

  • Confirm the boiler model against the fits list above
  • Check the appliance serial number matches the corresponding entry
  • Compare the part number 7829297 against the component being removed
  • Check the pipe and its connections for damage before fitting

Not sure which part?

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