Vaillant
Vaillant Flow Limiter 8 Litre 0020213937
Vaillant flow limiter rated at 8 litres, part number 0020213937, for use in compatible Vaillant combi boiler models.
At a glance
- Also known as 1388092
£9.22
£7.68 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 Vaillant flow limiter (part number 0020213937) is an 8 litre flow-restricting component used in the domestic hot water circuit of compatible Vaillant combi boilers. It regulates the volume of water passing through the appliance to keep the hot water draw-off within the design flow rate. It is a small, serviceable part typically accessed during work on the DHW side of the boiler.
Signs this part needs replacing
- Hot water flow rate at the tap is noticeably lower than expected, with no fault found elsewhere in the DHW circuit.
- Flow rate is erratic or drops off as the tap is run.
- The limiter is visibly scaled, blocked or damaged on inspection.
- Hot water performance has changed after the limiter was disturbed or refitted during other work.
Before you order
- Check the appliance data plate and confirm the model matches one of the fitments listed above.
- Confirm the existing part number is 0020213937 before ordering.
- Verify the 8 litre rating is correct for your appliance, as flow limiters are model-specific.
- Inspect the DHW circuit for other causes of restricted flow before replacing the limiter.
Compliance
| Alternative numbers | 1388092 |
|---|
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| VAILLANT VUW 246/7-2 | 47-044-79 | 47-044-79 | — | — |
| VAILLANT ecoFIT PURE 825 - VUW 256/6-3 (2016) | 47-044-68 | 47-044-68 | — | — |
| VAILLANT ecoFIT SUSTAIN 825 - VUW 256/6-3 (2016) | 47-044-71 | 47-044-71 | — | — |
| VAILLANT ecoTEC SUSTAIN 24 VUW 246/7-2 (2017) | 47-044-79 | 47-044-79 | — | — |
| VAILLANT ecoTEC SUSTAIN 24 VUW 246/7-2 R1 (2021) | 47-044-79 | 47-044-79 | — | — |
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.
VAILLANT appliance manual — VUW 246/7-2 (GC 47-044-79), ecoTEC SUSTAIN 24 VUW 246/7-2 (2017) (GC 47-044-79)
manualmanualVAILLANT appliance manual — ecoFIT PURE 825 - VUW 256/6-3 (2016) (GC 47-044-68)
manualmanualVAILLANT appliance manual — ecoFIT SUSTAIN 825 - VUW 256/6-3 (2016) (GC 47-044-71)
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