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Alpha 8mm Dia. Pipe Expansion Vessel 1.025385

Alpha

Alpha 8mm Dia. Pipe Expansion Vessel 1.025385

8mm diameter pipe for the expansion vessel on Alpha He25 and He33 LPG boilers.

At a glance

  • Also known as 8D-PIPE-FOR-EXPANSION-VESSEL, 1259446
Manufacturer part no.
1.025385
Showing prices

£26.90

£22.42 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 8mm diameter pipe for the expansion vessel is a manufacturer part from Alpha, listed under part number 1.025385. It forms the connection between the expansion vessel and the boiler's hydraulic circuit on the Alpha He range. Its function is to carry water between the vessel and the system as pressure changes during heating cycles.

Signs this part needs replacing

  • Water weeping or dripping from the pipe or its connections
  • Visible corrosion, pitting or scaling on the pipe surface
  • Kinking, crushing or deformation of the pipe restricting flow
  • Repeated pressure loss on the boiler that traces back to the expansion vessel connection
  • Staining or residue around the vessel indicating a long-standing weep

Before you order

  • Confirm your boiler model against the fit list above, using the model name and GC number on the appliance data badge
  • Check the existing pipe diameter and routing match the 8mm specification
  • Inspect the vessel connection points for damage that may also need attention
  • Verify the part number 1.025385 against the manufacturer's parts list for your appliance

Not sure which part?

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