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Alpha Gas Manifold 1.021751

Alpha

Alpha Gas Manifold 1.021751

Gas manifold for Alpha HE, HE CB25 and HE Sy25 boilers, distributing gas to the burner assembly.

At a glance

  • Appliance family: Alpha HE / HE CB25 / HE Sy25
  • Also known as GAS-MANIFOLD-HE-CB25, 1250322
  • Work on gas-carrying components must be carried out by a competent Gas Safe registered engineer
Manufacturer part no.
1.021751
Showing prices

£71.95

£59.96 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 Alpha 1.021751 gas manifold is a gas-carrying component used on Alpha HE, HE CB25 and HE Sy25 boilers. It feeds and distributes gas to the burner assembly as part of the boiler's gas valve arrangement. It is listed under gas valves within the Alpha boiler spares range.

Signs this part needs replacing

  • Gas pressure readings at the burner that cannot be set within the manufacturer's stated range
  • Visible corrosion, cracking or distortion on the manifold body
  • Leak detection fluid indicating a gas escape at the manifold joints or unions
  • Soot deposits or unstable flame pattern pointing to uneven gas distribution
  • Manifold seating or sealing faces damaged after gas valve removal or servicing

Before you order

  • Confirm the boiler model and GC number against the fitment list above
  • Check the existing manifold part number before removal where it is still legible
  • Verify that the gas valve and burner assembly are undamaged, as manifold faults can affect both
  • Work on gas-carrying components must be carried out by a competent Gas Safe registered engineer

Not sure which part?

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