Vaillant
Vaillant T-Connector 0020166554
Vaillant T-connector, part number 0020166554, for VPM 15 D and VPM 30 D pump units.
At a glance
- Part type: T-connector
- Also known as 1387778
£23.71
£19.76 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 T-connector, part number 0020166554, is a three-way pipe fitting used within the pump unit assembly on Vaillant VPM appliances. It joins the pipework runs at the pump unit, directing flow between the connected sections of the hydraulic circuit. It is a service part intended for like-for-like replacement on the models listed below.
Signs this part needs replacing
- Visible weeping or water tracking at the connector body or its joints
- Damp staining, scale deposits or corrosion around the fitting
- A loose or disturbed pipe connection at the pump unit that will not seal
- Cracking, deformation or mechanical damage to the connector
- System pressure loss traced to the pump unit pipework
Before you order
- Confirm your appliance model against the fit list above before ordering
- Check the part number on the existing component matches 0020166554
- Inspect the surrounding pipework and joints for related damage before fitting
- Isolate and depressurise the appliance before any work on the hydraulic circuit
Compliance
| Alternative numbers | 1387778 |
|---|
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| VAILLANT PUMP UNIT VPM 15 D | — | — | — | |
| VAILLANT PUMP UNIT VPM 30 D | — | — | — | |
| VAILLANT VPM 15 D | — | — | — | |
| VAILLANT VPM 30 D | — | — | — |
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.
Not sure which part?
Search by part number, product name or brand — our technical team confirms fitment before anything is dispatched.