Navien
Navien Adaptor PRV 20061682A
Pressure relief valve adaptor, part 20061682A, for Navien NCB300 and NCB500 combi boilers.
At a glance
- Part type: pressure relief valve adaptor
£20.81
£17.34 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 Adaptor PRV is a pressure relief valve adaptor manufactured by Navien for its NCB300 and NCB500 combi boiler ranges. It forms the connection between the boiler's pressure relief valve and the discharge pipework, allowing the valve to be mounted and the discharge route to be terminated correctly. It is supplied under Navien part number 20061682A.
Signs this part needs replacing
- Water weeping or dripping from the pressure relief valve discharge pipe when the system is below its set pressure
- Corrosion, pitting or limescale build-up on the adaptor body or at its threaded joints
- Visible dampness or staining around the adaptor connection inside the boiler casing
- System pressure that climbs steadily with no heat demand, indicating the valve is passing
- Difficulty achieving a sound, leak-free seal when the discharge pipework is reconnected
Before you order
- Confirm your boiler model and serial number against the fitment list above
- Check the existing adaptor and its connections for thread condition and any damage before removal
- Isolate the appliance, drain down and depressurise the system before starting work
- Verify the part number 20061682A matches the item you are removing
No specification data held for this part.
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| NAVIEN NCB300-28K COMBI - (Serial Number 3710) | — | — | — | |
| NAVIEN NCB300-28K COMBI - (Serial Number 3710) | — | — | — | |
| NAVIEN NCB300-37K COMBI - (Serial Number 3734) | — | — | — | |
| NAVIEN NCB300-37K COMBI - (Serial Number 3734) | — | — | — | |
| NAVIEN NCB300-41K COMBI - (Serial Number 3711) | — | — | — | |
| NAVIEN NCB300-41K COMBI - (Serial Number 3711) | — | — | — | |
| NAVIEN NCB500-1S+/32K COMBI - (Serial Number 3924) | — | — | — | |
| NAVIEN NCB500-1S+/32K COMBI - (Serial Number 3924) | — | — | — | |
| NAVIEN NCB500-2S+/41K COMBI - (Serial Number 3712) | — | — | — | |
| NAVIEN NCB500-2S+/41K COMBI - (Serial Number 3712) | — | — | — |
Showing 10 of 12 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.
NAVIEN appliance manual — NCB300-28K COMBI - (Serial Number 3710), NCB300-37K COMBI - (Serial Number 3734), NCB300-41K COMBI - (Serial Number 3711)
manualmanualNAVIEN appliance manual — NCB500-1S+/32K COMBI - (Serial Number 3924), NCB500-2S+/41K COMBI - (Serial Number 3712), NCB500-2S/37K COMBI - (Serial Number 3735)
manualNo technical questions yet for this part.
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