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Potterton Solid Plug 2 1/2 Inch 5139836

Potterton

Potterton Solid Plug 2 1/2 Inch 5139836

Potterton 5139836 solid plug, 2 1/2 inch, supplied as the sludge removal cap for NXR3I and NXR4I commercial boilers.

Manufacturer part no.
5139836
Showing prices

£67.13

£55.94 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 Potterton solid plug, 2 1/2 inch, supplied under part number 5139836. It is listed as a sludge removal cap for Potterton Commercial boiler plant. The cap seals the sludge removal point, allowing the appliance to be drained, flushed and checked without disturbing the main pipework.

Signs this part needs replacing

  • Water weeping or tracking from the sludge removal point
  • Visible corrosion, pitting or scale build-up on the plug
  • Damaged or flattened sealing face after removal and refitting
  • Threads that will not pull up tight or bind when turned
  • Repeated air ingress at the drain point after servicing

Before you order

  • Confirm the part number 5139836 against the appliance data plate or existing component
  • Check the plug size is 2 1/2 inch before ordering
  • Verify the boiler model and section count against the fit list above
  • Inspect the mating thread and seating face for damage while the plug is out

Not sure which part?

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