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Ariston Pipe Expansion Vessel 65100681

Ariston

Ariston Pipe Expansion Vessel 65100681

Expansion vessel connection pipe for Ariston Microgenus and Microgenus II combi and system boilers.

At a glance

  • Also known as 1574556
Manufacturer part no.
65100681
Showing prices

£19.99

£16.66 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 expansion vessel pipe is a manufacturer-supplied connection component for Ariston Microgenus and Microgenus II boilers. It links the expansion vessel to the boiler's hydraulic circuit, allowing the vessel to absorb expansion as system water heats. The part is identified by Ariston part number 65100681.

Signs this part needs replacing

  • Visible corrosion, pitting or staining along the pipe body or at the unions
  • Weeping or dripping at the pipe connections to the expansion vessel or hydraulic block
  • System pressure rising excessively when the boiler heats up, or falling when it cools
  • Water discharging from the pressure relief valve during normal operation
  • Scale or debris restricting flow through the pipe, affecting vessel performance

Before you order

  • Confirm your boiler model against the fit list above before ordering
  • Check the pipe connections and unions on your appliance match the part being replaced
  • Verify the existing component carries Ariston part number 65100681
  • Inspect the expansion vessel itself for a failed diaphragm, as pressure faults can originate there rather than at the pipe

Not sure which part?

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