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Potterton Flue Sample Plug 248429

Potterton

Potterton Flue Sample Plug 248429

M14 x 1 mm threaded cap that seals the flue gas sampling point on Potterton Commercial Sirius FS boilers.

At a glance

  • Also known as FLUE-SAMPLE-PLUG---M14-X-1
Manufacturer part no.
248429
Showing prices

£6.00

£5.00 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

The Potterton flue sample plug (part number 248429) is a threaded M14 x 1 mm cap used to seal the flue gas sampling point on Potterton Commercial Sirius FS boilers. It closes the test port after combustion readings have been taken, keeping the flue gas path sealed during normal operation.

Signs this part needs replacing

  • Flue gas detected escaping around the sample point
  • Cap missing, loose or cross-threaded
  • Corrosion or visible damage to the cap or its thread
  • Unstable or drifting combustion analyser readings at the port

Before you order

  • Confirm the boiler is a Potterton Commercial Sirius FS 50-70, 90-105 or 130-160
  • Check the existing cap thread is M14 x 1 mm
  • Inspect the sampling port thread for damage before fitting a new cap
  • Verify part number 248429 against the boiler documentation

Not sure which part?

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