Checking hours…Mon–Fri 7:30am–5pm · Sat 9am–12pm01302 279234Trade account
Potterton NXR4 Flow and Return Flange COM17000766

Potterton

Potterton NXR4 Flow and Return Flange COM17000766

Potterton NXR4 flow and return flange, 125mm, for Potterton Commercial NXR4 series boilers.

At a glance

  • Appliance family: NXR4
Manufacturer part no.
COM17000766
Showing prices

£140.40

£117.00 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

This is a Potterton flow and return flange supplied under part number COM17000766, identified as an NXR4 flow and return flange. It is a 125mm flange used on Potterton Commercial NXR4 series boiler installations, forming the connection point where flow and return pipework meets the appliance. The part is listed as obsolete by the manufacturer's commercial spares range.

Signs this part needs replacing

  • Visible weeping or staining at the flange joint where it meets the boiler
  • Corrosion or pitting on the flange face or stud holes
  • Difficulty achieving a seal on reassembly after pipework work
  • Distortion of the flange face, causing persistent joint leakage
  • Leaks that reappear shortly after retightening the flange bolts

Before you order

  • Confirm the appliance is an NXR4 series boiler and note the section count against the fit list
  • Check the flange size on the existing part matches 125mm
  • Inspect the mating pipework and gasket face for damage before fitting
  • Verify the part number COM17000766 against the appliance documentation

Not sure which part?

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