Glow-worm
Glow-worm Diverter Valve Assembly S801204
Glow-worm Sanibloc diverter valve assembly, part number S801204, for gas boiler hot water and heating flow control.
At a glance
- Also known as 1336606, N1820-1
£272.16
£226.80 ex. VAT · VAT at 20%
Same-day dispatch
Ordered by 4pm Mon–Fri, 10:30am Sat.
30-day returns
Unused, in original packaging.
What it is
The Glow-worm S801204 is a complete diverter valve assembly for Glow-worm Sanibloc gas boilers. The diverter valve directs water flow between the central heating circuit and the domestic hot water circuit, so the boiler serves the correct demand at the right time. This listing is for the complete assembly rather than individual internal components.
Signs this part needs replacing
- Domestic hot water runs cold or only lukewarm while the heating is off
- Radiators heat up when only hot water is drawn
- No hot water at the tap despite the boiler firing
- Diverter valve sticking, seized or failing to change position
- Water leaking from around the diverter valve body
Before you order
- Confirm your boiler model against the manufacturer's parts list before ordering
- Check the existing valve's part number and Sanibloc variant match S801204
- Inspect the valve body and connections for scale or debris before fitting
- Work on gas appliances should be carried out by a competent heating engineer
Compliance
| Barcode / EAN | 5037985054303 |
|---|---|
| Alternative numbers | 1336606, N1820-1 |
No fitment data held for this part.
Documents & drawings
Everything we hold for this part. Where a document exists but we don't hold it, the technical team will source it from the manufacturer — usually the same working day.
No documents held for this part. The technical team will source them from the manufacturer — usually the same working day.
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