Checking hours…Mon–Fri 7:30am–5pm · Sat 9am–12pm01302 279234Trade account
Vaillant Solar Expansion Vessel /2 80L Sales Item 302497

Vaillant

Vaillant Solar Expansion Vessel /2 80L Sales Item 302497

Vaillant 302497 solar expansion vessel, 80 litre, supplied as a sales item for solar thermal systems.

At a glance

  • Also known as 1380298
Manufacturer part no.
302497
Showing prices

£240.25

£200.21 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 Vaillant 302497 is an 80 litre expansion vessel intended for use on solar thermal systems. It is listed by the manufacturer as a solar expansion vessel, marked /2, and is supplied as a sales item. Within a sealed solar circuit the vessel absorbs the volume change of the heat transfer fluid as it heats and cools, helping to keep circuit pressure stable.

Before you order

  • Confirm the part number 302497 against the existing vessel or the appliance documentation.
  • Check that an 80 litre capacity matches the system volume and the expansion requirement of the installation.
  • Verify the connection size and system pressure rating required by the solar circuit before fitting.
  • Consider whether the pre-charge pressure needs setting to suit the installation's static head and operating pressure.

Not sure which part?

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