Vaillant Flap 0020143519

The Vaillant 0020143519 is a flap supplied for Vaillant ecoTEC VU series boilers. It forms part of the appliance's casing or air path assembly, where it seals and covers the opening it is fitted to. It is a manufacturer part identified by the Vaillant number 0020143519.

• The flap no longer sits flat or seals against its seating
• Visible cracking, distortion or corrosion of the flap
• The flap has come loose, detached or gone missing from the appliance
• Rattle or vibration from the flap area during operation
• The flap cannot be refitted securely because its fixings or edges are worn

• Confirm your boiler model and GC number against the fitment list above
• Check the part number 0020143519 against the manufacturer's parts list for your appliance
• Inspect the existing flap and its seating to confirm the fault lies with the flap itself
• Check whether any fixings or seals around the flap also need attention