Checking hours…Mon–Fri 7:30am–5pm · Sat 9am–12pm01302 279234Trade account
Hamworthy Flue Extension 500mm 573406026

Hamworthy

Hamworthy Flue Extension 500mm 573406026

Hamworthy 500mm flue extension, part 573406026, for extending the flue run on compatible Hamworthy appliances.

At a glance

  • Part type: flue extension
  • Also known as 80125
  • This part is fitted to a gas appliance; installation must be carried out by a Gas Safe registered engineer.
Manufacturer part no.
573406026
Showing prices

£128.00

£106.67 ex. VAT · VAT at 20%

Available to order · 3 working days
Available to order · 3 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

This is a 500mm flue extension manufactured by Hamworthy, supplied under part number 573406026. It is a length of flue duct that adds to an existing flue run, allowing the terminal position to be set further from the appliance where the standard flue length will not reach.

Hamworthy reference 80125 appears alongside the part number and identifies this extension in the manufacturer's flue range. It is a passive flue component rather than a gas-carrying control part.

Signs this part needs replacing

  • Visible corrosion, pitting or perforation on the flue wall, particularly at joints and seams
  • Dented or crushed sections that reduce the flue cross-section and affect combustion discharge
  • Discoloured or degraded seals at the extension joint, with staining or condensate weeping
  • Movement or insecurity in the flue run where the extension no longer sits square
  • Flue gas readings or combustion analysis results outside the expected range after disturbance of the flue

Before you order

  • Confirm your appliance model against the compatibility list before ordering, as flue components are not interchangeable between ranges
  • Measure the additional flue length required, allowing for the terminal position and any offsets, so 500mm is the correct increment
  • Check whether the joint requires a specific flue seal or gasket, as these are separate items
  • This part is fitted to a gas appliance; installation must be carried out by a Gas Safe registered engineer.

Not sure which part?

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