Checking hours…Mon–Fri 7:30am–5pm · Sat 9am–12pm01302 279234Trade account
Potterton Union 1" 9 to 11 Section S15922350

Potterton

Potterton Union 1" 9 to 11 Section S15922350

A 1" union fitting for the Potterton Derwent Prestige PLUS boiler, suited to 9 to 11 section builds.

At a glance

  • Also known as 1134575
Manufacturer part no.
S15922350
Showing prices

£55.20

£46.00 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 Union 1" 9 to 11 Section is a threaded union fitting supplied for the Potterton Derwent Prestige PLUS boiler. It forms the joint between the boiler's section assembly and the connecting pipework on 9 to 11 section builds of this appliance. It is a service part intended for replacement when the existing union no longer seals correctly.

Signs this part needs replacing

  • Weeping or dripping at the union joint
  • Visible corrosion or pitting on the union body
  • Scale or debris build-up preventing a clean seal
  • Water staining or mineral deposits around the connection
  • The joint needs repeated re-tightening to stay dry

Before you order

  • Confirm the appliance is a Potterton Derwent Prestige PLUS
  • Check the union thread size required is 1"
  • Confirm the boiler is a 9 to 11 section build
  • Inspect the mating faces of the joint before fitting

Not sure which part?

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