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Glow-worm Automatic De-Aerator GLOWWORMS1024500

Glow-worm

Glow-worm Automatic De-Aerator GLOWWORMS1024500

Glow-worm S1024500 automatic de-aerator, a hydraulic air vent that removes trapped air from the boiler water circuit. Supplied singly.

At a glance

  • Also known as 3532041178310, FER39818220, GLOWWORMS1024500, 265075904639, 43376055
Manufacturer part no.
S1024500
Showing prices

£30.00

£25.00 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.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 Glow-worm S1024500 is an automatic de-aerator, also described as an automatic air vent, forming part of the hydraulic group on Glow-worm heating appliances. It sits on the water circuit and continuously releases air that collects in the system, so the pump and heat exchanger are not left running against an air pocket. The unit is supplied as a single piece and carries a 1 year manufacturer guarantee.

Signs this part needs replacing

  • Air continues to collect in the system and radiators need bleeding repeatedly
  • Kettling, gurgling or rushing water noise from the boiler on start-up
  • Water weeping or dripping from the vent body or its cap
  • The vent cap no longer seals and the pin does not reseat after venting
  • The boiler locks out or the pump runs dry because air is not being cleared

Before you order

  • Match the part number S1024500 against the label on the existing component or the appliance parts list
  • Check the appliance model and serial number so the correct hydraulic variant is selected
  • Inspect the sealing washer or O-ring on the old vent and replace it if it is perished, as a seal is not listed with this item
  • Isolate the appliance and drain or depressurise the water circuit before removing the old vent

Not sure which part?

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