Vaillant
Vaillant Diaphragm Spring 111718
Spring-loaded diaphragm for Vaillant MAG 14-0/0 XI and XZ water heaters, part number 111718.
At a glance
- Appliance family: MAG 14-0/0 gas water heaters
- Also known as 1387184
£10.68
£8.90 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 diaphragm spring (part 111718) is a service component for the water section of Vaillant MAG 14-0/0 gas water heaters. It sits within the water section assembly and responds to changes in water flow through the appliance. It is listed for the MAG 14-0/0 XI and XZ models built between 2004 and 2009.
Signs this part needs replacing
- Reduced or inconsistent hot water output when a tap is opened
- Burner failing to ignite or cutting out during draw-off
- Water weeping from around the diaphragm housing
- Delayed or erratic response to changes in water flow
Before you order
- Confirm the appliance model and data plate details match MAG 14-0/0 XI or XZ.
- Check part number 111718 against the manufacturer's parts list for your appliance.
- Inspect the diaphragm housing for damage or debris before fitting.
Compliance
| Alternative numbers | 1387184 |
|---|
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| VAILLANT MAG 14-0/0 XI (2004-2009) | — | — | — | |
| 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.
No technical questions yet for this part.
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