Our 100% positive feedback is for the original Fit Once™ repair kit. We sell nothing else so buy the best!

This kit is compatible with all Vaillant ecoTEC diverter valves made from black plastic with a red electrical connector (Vaillant part No: 0020020015)

Fit Once™ features:

  • 12 month warranty
  • No need to remove entire valve
  • Permanently replaces the old leaking cartridge
  • Extraction tools provided
  • Detailed instructions and videos
  • Email support if required
  • Fit Once can be serviced in under 1 minute – no more expensive replacements
  • Spare seal included & are cheap to purchase
  • Designed, patented and manufactured in the UK

Fit Once™ is an environmentally friendly alternative to replacing the entire valve with minimal maintenance once installed.

To find out more, watch our video:  https://youtu.be/OaYK7ob7VpY