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Ideal Expansion Vessel 7 Litre 173625

Ideal

Ideal Expansion Vessel 7 Litre 173625

Ideal 173625 7 litre expansion vessel for Europa 232, Mini C32 and Mini HE C32 boilers, absorbing pressure surges in the sealed heating circuit.

At a glance

  • Part type: Expansion vessel
  • Also known as 1179568
Manufacturer part no.
173625
Showing prices

£124.96

£104.13 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 Ideal 173625 is a 7 litre expansion vessel used on Ideal domestic and commercial boilers. It is a sealed tank divided by a diaphragm, with a charge of air on one side and system water on the other. As the water in a sealed heating circuit heats and expands, the air cushion compresses to absorb the extra volume, keeping system pressure within safe limits and protecting the boiler and its components from pressure surges.

Signs this part needs replacing

  • System pressure climbs sharply or repeatedly once the boiler is up to temperature
  • Water discharges from the pressure relief valve during normal heating cycles
  • Water appears at the air valve on the vessel, or no air pressure can be held when the charge is checked
  • Boiler pressure falls soon after topping up, or a low pressure fault recurs
  • Corrosion, scale or water staining around the vessel connection or mounting bracket

Before you order

  • Check the GC number on the appliance data badge against the list above before ordering, as the Europa 232 and Mini C32 variants carry different GC numbers
  • Confirm the boiler model and, where relevant, the serial number so the correct vessel is supplied
  • Have a suitable seal or gasket to hand for the vessel connection, as the existing one may be disturbed during removal

Not sure which part?

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