Vokera
Vokera Antisticking Gas Valve 20123161
Vokera antisticking gas valve, part 20123161, for Evolve and Unica MAX boilers.
At a glance
- Also known as 1533953
- Gas valve replacement is gas work and must be carried out by a Gas Safe registered engineer
£152.82
£127.35 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 Vokera antisticking gas valve (part number 20123161) is a gas valve assembly used on Vokera Evolve and Unica MAX boilers. It controls the flow of gas to the burner, opening and closing on demand from the appliance's control sequence. The valve is built on the SIT 849 Sigma platform, reference 0.849.508.
Signs this part needs replacing
- The boiler fails to ignite, with no gas reaching the burner
- Repeated lockouts or flame failure faults during a demand for heat
- The valve sticks and does not open or close cleanly on each cycle
- Intermittent or unstable burner operation that cannot be traced to ignition or detection components
- Gas pressure at the valve outlet does not respond as expected when the boiler calls for heat
Before you order
- Confirm your boiler model against the fit list above before ordering
- Check the part number on the existing valve matches 20123161
- Verify the valve platform marking, SIT 849 Sigma, on the component being replaced
- Gas valve replacement is gas work and must be carried out by a Gas Safe registered engineer
Compliance
| Alternative numbers | 1533953 |
|---|
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| VOKERA EVOLVE 18S (BOILER CODE 20127447) | 41-094-98 | 41-094-98 | — | — |
| VOKERA EVOLVE 24C (BOILER CODE 20127447) | 47-364-37 | 47-364-37 | — | — |
| VOKERA EVOLVE 28C (BOILER CODE 20119409) | 47-364-38 | 47-364-38 | — | — |
| VOKERA EVOLVE 30S (BOILER CODE 20131081) | 41-364-04 | 41-364-04 | — | — |
| VOKERA EVOLVE 32C (BOILER CODE 20131015) | 47-364-39 | 47-364-39 | — | — |
| VOKERA EVOLVE 35S (BOILER CODE 20131082) | 41-364-02 | 41-364-02 | — | — |
| VOKERA EVOLVE 36C (BOILER CODE 20131016) | 47-364-40 | 47-364-40 | — | — |
| VOKERA EVOLVE 42C (BOILER CODE 20131017) | 47-364-41 | 47-364-41 | — | — |
| VOKERA UNICA MAX 20S | 41-364-13 | 41-364-13 | — | — |
| VOKERA UNICA MAX 20S LPG | 41-364-15 | 41-364-15 | — | — |
Showing 10 of 24 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.
VOKERA appliance manual — EVOLVE 18S (BOILER CODE 20127447) (GC 41-094-98), EVOLVE 30S (BOILER CODE 20131081) (GC 41-364-04), EVOLVE 35S (BOILER CODE 20131082) (GC 41-364-02)
manualmanualVOKERA appliance manual — EVOLVE 24C (BOILER CODE 20127447) (GC 47-364-37), EVOLVE 28C (BOILER CODE 20119409) (GC 47-364-38), EVOLVE 32C (BOILER CODE 20131015) (GC 47-364-39), EVOLVE 36C (BOILER CODE 20131016) (GC 47-364-40)
manualmanualVOKERA appliance manual — UNICA MAX 20S (GC 41-364-13), UNICA MAX 20S LPG (GC 41-364-15), UNICA MAX 30S (GC 41-364-14), UNICA MAX 30S LPG (GC 41-364-16)
manualmanualVOKERA appliance manual — UNICA MAX 35C (GC 47-364-61), UNICA MAX 35C LPG (GC 47-364-63), UNICA MAX 40C (GC 47-364-62), UNICA MAX 40C LPG (GC 47-364-64)
manualNo technical questions yet for this part.
Not sure which part?
Search by part number, product name or brand — our technical team confirms fitment before anything is dispatched.