Vaillant
Vaillant Water Deficiency Valve 115326
Water deficiency valve for the Vaillant MAG 14-0/0 XZ water heater, used to detect insufficient water flow.
At a glance
- Appliance family: MAG 14-0/0 XZ
- Also known as 1387304
£9.68
£8.07 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 water deficiency valve is a safety component used on Vaillant MAG 14-0/0 XZ water heaters. It monitors water flow through the appliance and interrupts operation when the supply is insufficient, protecting the heat exchanger from overheating. It is supplied under Vaillant part number 115326.
Signs this part needs replacing
- The appliance fails to fire when a hot water tap is opened
- The burner shuts down shortly after ignition during draw-off
- Intermittent or fluctuating hot water output that cannot be traced to the supply
- Repeated lockouts or shutdowns during normal use
- Visible scale, debris or damage around the valve body or its connections
Before you order
- Confirm the appliance model on the data plate matches MAG 14-0/0 XZ
- Check the existing valve against part number 115326 before ordering
- Inspect the water supply and inlet filter for debris or scale that may be causing the fault rather than the valve itself
- Verify the valve connections and mounting are undamaged
Compliance
| Alternative numbers | 1387304 |
|---|
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| VAILLANT MAG 14-0/0 XZ (2004-2009) | — | — | — |
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 documents held for this part. The technical team will source them from the manufacturer — usually the same working day.
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