port valve

Hi, some years ago I had wet UFH installed in my conservatory. It was just chopped into the existing Y plan wiring and plumbing. The problem being that when UFH demands the CH/HW runs and vice versa. We have put up with it but now as we are spending more time at home it needs fixing. The best...

Hi I’ve got many fingers crossed in the hope that some of you good people can help me... It’s an ‘S’ system traditional gas boiler with a hot water tank and radiators, with two 2-port valves to separate the HW and CH parts of the system. I can use the programmer no problem to fire up either or...