Navien
Navien Flow Control Valve 30028065A
Flow control valve for the Navien NCB300-37K Combi boiler, used to regulate water flow through the appliance.
At a glance
- Part type: flow control valve
- Appliance family: NCB300-37K Combi
£5.02
£4.18 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 Navien Flow Control Valve 30028065A is a diverter valve and hydraulic component from Navien, classed in the diverter valves and hydraulics category. It is listed for the NCB300-37K Combi boiler.
Signs this part needs replacing
- Water flow through the boiler is erratic or fails to hold steady
- Heating or hot water output fluctuates when demand changes
- Visible scale, debris or damage around the valve body
- Leaks or weeping from the valve or its connections
Before you order
- Confirm the appliance is a Navien NCB300-37K Combi with serial number 3734
- Verify the existing part number 30028065A before ordering
No specification data held for this part.
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| NAVIEN NCB300-37K COMBI - (Serial Number 3734) | — | — | — | |
| NAVIEN NCB300-37K COMBI - (Serial Number 3734) | — | — | — |
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.
No technical questions yet for this part.
Not sure which part?
Tell the parts assistant what it's going into — the appliance make and model, or the GC number off the data badge — and it will check this part is on the fit list.