Checking hours…Mon–Fri 7:30am–5pm · Sat 9am–12pm01302 279234Trade account
Potterton Nipple G1 5142398

Potterton

Potterton Nipple G1 5142398

Threaded nipple for Potterton Commercial Sirius 2 and Sirius 3 boilers, part 5142398.

Manufacturer part no.
5142398
Showing prices

£49.20

£41.00 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 NIPPLE G1 is a threaded nipple supplied by Potterton for Potterton Commercial boilers. It forms part of the Potterton Commercial spares range and is used to make a threaded connection within the boiler assembly. It is listed for the Sirius 2 and Sirius 3 commercial boiler models.

Signs this part needs replacing

  • Weeping or dripping at the threaded joint
  • Corrosion or rust staining around the nipple body and threads
  • Scale or mineral build-up on the threads affecting the seal
  • Cross-threaded or damaged threads preventing a sound connection
  • Water tracking or leak staining on adjacent components

Before you order

  • Confirm the appliance is a Potterton Commercial Sirius 2 or Sirius 3 in Fs90 or Fs110 form
  • Compare the thread sizes on the existing nipple against the manufacturer description before fitting
  • Check the part number 5142398 against the appliance documentation for the installation

Not sure which part?

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