A permanent solution to leaking Vaillant ecoTEC diverter valves. After installation the seals that wear can be replaced cheaply and without draining the boiler. An extra free seal is included in this kit.
Easy cartridge extraction with these tools for the Vaillant black plastic diverter valve (Vaillant valve part No:0020020015). See our other listing for the brass valve.
Designed and manufactured in the UK. This is all we sell so you know the 100% positive feedback is just on our Fit Once cartridge and tools.