Worcester Bosch
Worcester Bosch Pressure Relief Valve 87161424040
Worcester Bosch pressure relief valve, part 87161424040, for CDI and SBI series boilers; a safety component that discharges excess system pressure.
At a glance
- Part type: Pressure relief valve
- Also known as 312438, PRESSURE-RELIEF-VALVE-312438, 1018163, N1074
- This part is fitted to a gas appliance; installation must be carried out by a Gas Safe registered engineer.
£25.30
£21.08 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
A pressure relief valve manufactured by Worcester Bosch, supplied under part number 87161424040. It is the safety component that opens when sealed-system pressure rises beyond the set limit, discharging water through the boiler's discharge pipe to protect the heat exchanger and other components from over-pressurisation. The valve is used across a number of Worcester Bosch CDI and SBI series appliances.
Signs this part needs replacing
- Water continually dripping or running from the boiler's discharge pipe when the system is cold
- System pressure falling repeatedly and needing regular topping up
- Visible weeping or staining around the valve body or its outlet connection
- Pressure gauge reading climbing towards the safety limit during normal operation
- Valve failing to reseat after it has opened, often caused by scale or debris on the seat
Before you order
- Check the appliance GC number or serial plate against the compatibility list to confirm the correct valve for your model.
- Note the previous number ZCVLV041 and the alternative numbers 1018163, N1074 and WB87161424040 when cross-referencing an older installation.
- This part is fitted to a gas appliance; installation must be carried out by a Gas Safe registered engineer.
Mechanical
| Part type | Pressure Relief Valve - Use 312438 |
|---|
Compliance
| Manufacturer part number (MPN) | 87161424040 |
|---|---|
| GC number | 375-699 |
| Barcode / EAN | 4010009581673 |
| Alternative numbers | WB87161424040, 312438, PRESSURE-RELIEF-VALVE-312438, ZCVLV041, 1018163, N1074 |
| Previous numbers | ZCVLV041 |
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| WORCESTER 15 SBI NG | 41-311-43 | 41-311-43 | — | — |
| WORCESTER 24 CDI BF NG | 47-311-29 | 47-311-29 | — | — |
| WORCESTER 24 CDI OF LPG | 47-311-33 | 47-311-33 | — | — |
| WORCESTER 24 CDI OF NG | 47-311-32 | 47-311-32 | — | — |
| WORCESTER 24 CDI RSF LPG | 47-311-31 | 47-311-31 | — | — |
| WORCESTER 24 CDI RSF NG | 47-311-30 | 47-311-30 | — | — |
| WORCESTER 24 SBI RSF NG | 41-311-44 | 41-311-44 | — | — |
| WORCESTER 24i JUNIOR RSF LPG | 47-311-71 | 47-311-71 | — | — |
| WORCESTER 24i JUNIOR RSF NG | 47-311-69 | 47-311-69 | — | — |
| WORCESTER 24i RSF COMBI NG (NOV 2004) | 47-311-37 | 47-311-37 | — | — |
Showing 10 of 40 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 — 15 SBI NG (GC 41-311-43), 24 SBI RSF NG (GC 41-311-44)
manualmanualWORCESTER appliance manual — 24 CDI BF NG (GC 47-311-29)
manualmanualWORCESTER appliance manual — 24 CDI OF LPG (GC 47-311-33), 24 CDI OF NG (GC 47-311-32)
manualmanualWORCESTER appliance manual — 24 CDI RSF LPG (GC 47-311-31), 24 CDI RSF NG (GC 47-311-30)
manualmanualWORCESTER appliance manual — 24i JUNIOR RSF LPG (GC 47-311-71), 24i JUNIOR RSF NG (GC 47-311-69), 28i JUNIOR RSF NG (FEB 2003) (GC 47-311-72), 28i JUNIOR RSF NG (MAY 2003) (GC 47-311-70)
manualmanualWORCESTER appliance manual — 24i RSF COMBI NG (NOV 2004) (GC 47-311-37), 24i RSF COMBI NG (SEP 2001) (GC 47-311-37)
manualmanualWORCESTER appliance manual — 26 CDI RSF NG (GC 47-311-41), 26 CDI XTRA RSF LPG (GC 47-311-42), 26 CDI XTRA RSF NG (GC 47-311-41)
manualmanualWORCESTER appliance manual — 28 CDI RSF LPG (GC 47-311-35), 28 CDI RSF NG (GC 47-311-34)
manualmanualWORCESTER appliance manual — 28i RSF NG (GC 47-311-54)
manualmanualWORCESTER appliance manual — 35 CDI II RSF LPG (GC 47-311-59), 35 CDI II RSF NG (GC 47-311-58)
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