Recent content by EdBlin

Yep sorry - my fault, the name on the valve is YI

First time posting and can't seem to find a definitive answer to this one so...... I have a really old central heating system - a Vaillant combi boiler (vcw-sine 18 t3 wf h) that's at least 25 years old and old Yorkshire Imperial rads that sit about 6 inches off the wall and have a single...