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Alpha Filling Loop 3.015849

Alpha

Alpha Filling Loop 3.015849

Alpha filling loop (3.015849) for 240, InTec, 280, CB, CD and HE range boilers, used to manually top up central heating system pressure.

At a glance

  • Part type: Filling device
  • Also known as 7625854236516, ALPHA3.015849, FILLING-LOOP-CB2428-CD2432
Manufacturer part no.
3.015849
Showing prices

£64.42

£53.68 ex. VAT · VAT at 20%

In stock
Cut-off passed — dispatches next working day
Not certain it's the right part? The technical team verifies fitment before dispatch — no charge, and it stops a second trip.

Same-day dispatch

Ordered by 4pm Mon–Fri, 10:30am Sat.

30-day returns

Unused, in original packaging.

What it is

The Alpha filling loop is a serviceable spare that connects the mains cold water supply to the central heating circuit so the system can be topped up by hand. It is manufactured by Alpha and sits within the filling device group of domestic boiler parts and accessories. The assembly is used across the 240, InTec, 280, CB, CD, HE and InTec ErP boiler ranges, where it restores pressure lost through normal operation or minor system losses.

Signs this part needs replacing

  • System pressure falls repeatedly and the boiler needs topping up more often than usual.
  • Water weeps or drips from the filling loop body, braided hose or connection points.
  • The isolating valve no longer shuts off fully, so water continues to pass into the heating circuit.
  • The valve handle is stiff, seized or will not turn through its full travel.
  • Scale, corrosion or staining is visible around the loop or its fittings.

Before you order

  • Check the boiler model and GC number against the compatibility list, as several Alpha ranges use this loop.
  • Compare the number on the existing part with 3.015849 and with the earlier numbers listed below before ordering.
  • Inspect the washers and seals at the loop connections and replace them if they are compressed or perished.

Not sure which part?

Tell the parts assistant what it's going into — the appliance make and model, or the GC number off the data badge — and it will check this part is on the fit list.