Search results

Hi, i bought an expansion vessel from screwfix. I soldered in a 28mm to 15mm reducer in the return feed to the boiler and used 15mm pipe to connect the vessel to the return pipework. Everthing has been great, no problems since. Good luck, if you do go down this route, i hope it works for...

Many thanks for the prompt responses. It seems I will be able to use 15mm copper, so that makes life a lot easier. Thanks again,

Hi everyone, I am new to this forum and have already found it very helpful and informative. I hope someone out there can offer me some advice. I have a Vaillant Thermocompact boiler 628E, approx 7 years old. I have had problems with widely fluctuating pressure, ie system pressure...