Sime
Sime DHW Expansion Vessel 6245105
Sime DHW expansion vessel, 1.4 litre, part number 6245105, for Sime Avant and Dewy gas boilers.
At a glance
- Also known as 2041276
£152.16
£126.80 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 Sime 6245105 is a 1.4 litre domestic hot water (DHW) expansion vessel for Sime gas boilers. It absorbs the expansion of water heated in the domestic hot water circuit, limiting pressure rise and reducing stress on the appliance's DHW components. It is fitted across the Sime Avant and Dewy appliance families.
Signs this part needs replacing
- Water weeping or dripping from the vessel body or its connection
- DHW circuit pressure rising sharply when the boiler heats water
- Discharge from the pressure relief valve during normal operation
- A waterlogged vessel giving little or no pressure buffering
- Visible corrosion, distortion or physical damage to the vessel
Before you order
- Confirm your boiler model against the fitment list above, using the appliance part number or GC number where shown
- Check the capacity and connection of the vessel being removed match the replacement
- Isolate the appliance and depressurise the DHW circuit before removal
- Confirm any seals, washers or fixings required for the installation are available
Compliance
| Alternative numbers | 2041276 |
|---|
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| SIME AVANT 30/130 TS MET - 8091621 | — | — | — | |
| SIME DEWY 30/130 HE FS - 8101905 | — | — | — | |
| SIME DEWY 30/130 WM - 8101900 | 47-293-05 | 47-293-05 | — | — |
| SIME DEWY 30/80 WM - 8097800 | 47-283-04 | 47-283-04 | — | — |
| SIME SIME AVANT 30/130 TS | — | — | — | |
| SIME SIME DEWY 30/130 HE FS | — | — | — | |
| SIME SIME DEWY 30/130 WM | — | — | — | |
| SIME SIME DEWY 30/80 WM | — | — | — |
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.
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