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Ariston Expansion Vessel 61311907

Ariston

Ariston Expansion Vessel 61311907

Expansion vessel for Ariston Combi A 24 MFFI and Combi A 30 MFFI gas boilers, part number 61311907.

At a glance

  • Also known as EXPANSION-VESSEL-5L, 1573810
Manufacturer part no.
61311907
Showing prices

£209.52

£174.60 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 Ariston 61311907 is an expansion vessel for Ariston Combi A 24 MFFI and Combi A 30 MFFI gas boilers. It manages pressure changes in the heating system as water heats and expands. The part is listed in the Expansion Vessels category for gas boiler spares.

Signs this part needs replacing

  • Boiler pressure rises significantly when the heating is running and drops when the system cools.
  • The pressure relief valve discharges water during heating cycles.
  • System pressure needs frequent topping up.
  • Water is present at the expansion vessel connection or valve.
  • Boiler locks out or displays a pressure-related fault.

Before you order

  • Confirm the boiler model and GC number against the Fits list.
  • Check the existing expansion vessel label or boiler documentation to confirm the required capacity, as supplied data lists both 5 L and 6 L.
  • Verify the part number 61311907 before ordering.
  • Confirm the fault is not caused by other system components, such as the pressure relief valve or filling loop.

Not sure which part?

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