Sime
Sime Expansion Vessel 5139110
7 litre expansion vessel with a 1/2 inch male connection, manufactured by Sime for use in its gas boiler range.
At a glance
- Also known as EXPANSION-VESSEL-L7---12-M, 2040104
£108.82
£90.68 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 5139110 is a 7 litre expansion vessel with a 1/2 inch male threaded connection, manufactured for Sime gas boilers. It absorbs the expansion of water as the sealed heating circuit heats up, helping to keep system pressure within a stable range.
Signs this part needs replacing
- Boiler pressure rises sharply when the heating is on and falls again once cold
- Water discharges from the pressure relief valve during heating cycles
- System pressure drops repeatedly and needs frequent topping up
- Water or corrosion is visible at the vessel connection or on the vessel body
- The pressure gauge needle swings widely during normal operation
Before you order
- Confirm your boiler model against the fit list above
- Check the existing vessel's connection size and thread type
- Verify the vessel capacity matches the system requirement
- Check the system charge pressure before fitting
Compliance
| Barcode / EAN | 3283155400506 |
|---|---|
| Alternative numbers | EXPANSION-VESSEL-L7---12-M, 2040104 |
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| SIME FORMAT 20 BF CE IONO MET - 8092950 | — | — | — | |
| SIME FORMAT 20 CE IONO MET - 8092900 | — | — | — | |
| SIME FORMAT 25 OF C MET - 8092923 | — | — | — | |
| SIME FORMAT 25 OF GPL - 8092918 | — | — | — | |
| SIME FORMAT 25 OF MET - 8092906 | — | — | — | |
| SIME FORMAT 25BF GPL - 8092970 | — | — | — | |
| SIME FORMAT 25BF MET - 8092969 | — | — | — | |
| SIME FORMAT 25BF TS GPL - 8092981 | — | — | — | |
| SIME FORMAT 25BF TS MET - 8092980 | — | — | — | |
| SIME FRIENDLY FORMAT 80 TECHNYL - 8092974 | 47-719-20 | 47-719-20 | — | — |
Showing 10 of 29 compatible appliances.
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.
SIME appliance manual — FRIENDLY FORMAT 80 TECHNYL - 8092974 (GC 47-719-20), FRIENDLY FORMAT 80 - 8092956 (GC 47-719-07), FRIENDLY FORMAT 80E TECHNYL - 8092973 (GC 47-719-19), FRIENDLY FORMAT 80E - 8092955 (GC 47-719-08)
manualmanualSIME appliance manual — SUPER 90 MKII - 8093560 (GC 47-719-14)
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