Checking hours…Mon–Fri 7:30am–5pm · Sat 9am–12pm01302 279234Trade account
McDonald Water Storage Potable Expansion Vessel WU25EV

Advanced Water

McDonald Water Storage Potable Expansion Vessel WU25EV

25 litre potable expansion vessel, part WU25EV, for absorbing thermal expansion in domestic hot water systems.

At a glance

  • Also known as 2081642
Manufacturer part no.
366-147-0251
Showing prices

£161.21

£134.34 ex. VAT · VAT at 20%

Available to order · 7 working days
Available to order · 7 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 McDonald Water Storage WU25EV is a 25 litre potable expansion vessel, supplied under the Advanced Water brand. It is used on domestic hot water and potable water systems to absorb the expansion of heated water and limit the pressure rise that occurs as the cylinder or system charges. The vessel provides a sealed, air-charged chamber that accommodates this increased volume.

Before you order

  • Confirm the part number WU25EV and the 25 litre capacity match the vessel being replaced.
  • Check that the vessel is suitable for potable water use on the system concerned.
  • Verify the system connection arrangement and working pressure requirements against the installation before fitting.
  • Allow for the physical size of the vessel and the space available at the mounting position.

Not sure which part?

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