Worcester Bosch
Worcester Bosch Venturi Tube Negative Pressure 87161012640
Worcester Bosch 87161012640 negative pressure venturi tube for Junior RSF boilers, used in the air pressure sensing circuit.
At a glance
- Part type: Venturi (negative pressure tube)
- Appliance family: Junior RSF
- Also known as 1013647
- This part is fitted to a gas appliance; installation must be carried out by a Gas Safe registered engineer.
£3.74
£3.12 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 Worcester Bosch 87161012640 is a negative pressure venturi tube used in the air and flue pressure sensing circuit of Worcester Bosch Junior RSF appliances. It sits in the fan and flue path, where the movement of air creates the pressure differential that the air pressure switch reads. That signal proves the fan is running and the flue is clear before the boiler is allowed to fire.
Signs this part needs replacing
- The boiler locks out or fails to ignite even though the fan runs
- Intermittent lockouts that clear on reset and return shortly afterwards
- The air pressure switch does not operate when the fan is running
- Combustion readings drift outside the expected range for the appliance
- Visible cracking, splitting, blockage or a loose fit on the tube or its tappings
Before you order
- Check the appliance GC number and model against the compatibility list above before ordering
- Confirm the part number on the existing component matches 87161012640 or the alternative number 1013647
- Inspect the tube tappings and any seals at the same time, as disturbed joints may need attention on reassembly
- This part is fitted to a gas appliance; installation must be carried out by a Gas Safe registered engineer.
Mechanical
| Part type | Venturi |
|---|---|
| Appliance family | Junior RSF |
Compliance
| Manufacturer part number (MPN) | 87161012640 |
|---|---|
| GC number | H05-444 |
| Barcode / EAN | 4010009680659 |
| Commodity code | 8403 90 00 00 |
| GPC classification | Household Boilers/Furnaces/Tank Water Heaters Replacement Parts/Accessories |
| Alternative numbers | 1013647 |
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| WORCESTER 24i JUNIOR RSF LPG | 47-311-71 | 47-311-71 | — | — |
| WORCESTER 24i JUNIOR RSF NG | 47-311-69 | 47-311-69 | — | — |
| WORCESTER 28i JUNIOR RSF NG (FEB 2003) | 47-311-72 | 47-311-72 | — | — |
| WORCESTER 28i JUNIOR RSF NG (MAY 2003) | 47-311-70 | 47-311-70 | — | — |
| WORCESTER WORCESTER 24i JUNIOR RSF LPG | — | — | — | |
| WORCESTER WORCESTER 24i JUNIOR RSF NATURAL GAS | — | — | — | |
| WORCESTER WORCESTER 28i JUNIOR RSF LPG | — | — | — | |
| WORCESTER WORCESTER 28i JUNIOR RSF NATURAL GAS | — | — | — |
Documents & drawings
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