Worcester Bosch
Worcester Bosch blow off valve (L) 15 bar 87174010160
Genuine Worcester Bosch 15 bar blow off valve, part number 87174010160, for the FSN-GB, Greenstar HE and R/RD boiler ranges.
At a glance
- Part type: pressure relief (blow off) valve
- Also known as 1020033
- Any work on the sealed heating system should be carried out by a competent, Gas Safe registered engineer
£12.85
£10.71 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
This is a Worcester Bosch blow off (pressure relief) valve set to 15 bar, part number 87174010160. It sits in the boiler's hydraulic system and discharges water if system pressure rises to an unsafe level, protecting the appliance and pipework from over-pressurisation.
Signs this part needs replacing
- Water dripping or spraying from the discharge pipe
- Boiler losing pressure repeatedly with no visible leak elsewhere
- Valve weeping even at normal operating pressure
- Visible corrosion or scale build-up around the valve body
Before you order
- Match the part number printed on your existing valve to 87174010160 and confirm it is the 15 bar version, as other bar ratings exist for related models
- Isolate the boiler and depressurise the system before removal
- Any work on the sealed heating system should be carried out by a competent, Gas Safe registered engineer
Compliance
| GC number | E74-623 |
|---|---|
| Barcode / EAN | 4010009468950 |
| Alternative numbers | 1020033 |
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| WORCESTER BRITISH GAS GREENSTAR CC1-FSN-GB NG 29KW COMBI | 47-108-05 | 47-108-05 | — | — |
| WORCESTER BRITISH GAS GREENSTAR GREENSTAR HE PLUS-FSN- GB28KW | 47-311-56 | 47-311-56 | — | — |
| WORCESTER BRITISH GAS GREENSTAR GREENSTAR HE-FSN-GB NG 27KW | 47-311-55 | 47-311-55 | — | — |
| WORCESTER BRITISH GAS GREENSTAR ICC2-FSN-GB NAT 30KW COND COM | 41-108-09 | 41-108-09 | — | — |
| WORCESTER BRITISH GAS GREENSTAR ICC2-FSN-GB NAT 37KW COND COM | 41-108-10 | 41-108-10 | — | — |
| WORCESTER BRITISH GAS GREENSTAR RD537I | 47-108-11 | 47-108-11 | — | — |
| WORCESTER BRITISH GAS RD532 | 47-108-13 | 47-108-13 | — | — |
| WORCESTER BRITISH GAS RD532I | 47-108-10 | 47-108-10 | — | — |
| WORCESTER BRITISH GAS RD542I | 41-108-12 | 41-108-12 | — | — |
| WORCESTER GREENSTAR 24 FSN-GB COMBI NG | 47-406-32 | 47-406-32 | — | — |
Showing 10 of 43 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.
WORCESTER appliance manual — BRITISH GAS GREENSTAR ICC2-FSN-GB NAT 30KW COND COM (GC 41-108-09), BRITISH GAS GREENSTAR ICC2-FSN-GB NAT 37KW COND COM (GC 41-108-10)
manualmanualWORCESTER appliance manual — GREENSTAR 25 HE (GC 47-311-73), GREENSTAR 30 HE COMBI (GC 47-311-74)
manualmanualWORCESTER appliance manual — GREENSTAR 30 HE PLUS COMBI (GC 47-311-75), GREENSTAR 35 HE PLUS COMBI (GC 47-311-76), GREENSTAR HE PLUS-FSN-GB35KW (GC 47-311-57)
manualmanualWORCESTER appliance manual — GREENSTAR R25HE COMBI (GC 47-311-77), GREENSTAR R30HE COMBI (GC 47-311-78)
manualmanualWORCESTER appliance manual — GREENSTAR R30HE PLUS COMBI (GC 47-311-79), GREENSTAR R35HE PLUS COMBI (GC 47-311-80), GREENSTAR R40HE PLUS COMBI (GC 47-311-81)
manualmanualWORCESTER appliance manual — GREENSTAR RSF COMBI NG (GC 47-311-44), GREENSTAR ZWBR 11-25 A31 LPG (GC 47-311-45)
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