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Glow-worm Siphon With Float 0020018555

Glow-worm

Glow-worm Siphon With Float 0020018555

Siphon with float for the Glow-worm Xtramax HE condensing boiler, used to collect and discharge condensate.

At a glance

  • Also known as 1337479
Manufacturer part no.
0020018555
Showing prices

£55.13

£45.94 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 siphon with float is a condensate trap component manufactured by Glow-worm. It fits the Xtramax HE condensing boiler family, where it collects condensate produced during combustion and discharges it through the boiler's drainage route. The float assembly controls the release of condensate so that the trap retains a water seal against flue gases.

Signs this part needs replacing

  • Water pooling beneath the boiler or around the condensate trap
  • The trap no longer holds a water seal, allowing flue gases to pass
  • Boiler locking out or reporting a condensate-related fault
  • Gurgling or bubbling noises from the condensate route
  • Visible cracks, scale build-up or a stuck float in the siphon body

Before you order

  • Confirm your appliance is a Glow-worm Xtramax HE
  • Check the existing siphon against the part number 0020018555
  • Inspect the condensate pipework and trap housing for damage before fitting
  • Isolate the boiler and allow the condensate trap to drain before removal

Not sure which part?

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