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  1. G

    Bungs in central heating to allow rad valve replacement.

    Thanks very much fellas. Good advice. I think its as well to drain down then. Cheers.
  2. G

    Bungs in central heating to allow rad valve replacement.

    Thanks very much for rapid response. Presumably to create the vacuum I drain out some water. Can I then replace one rad valve then move onto another rad (I have 3 to replace for trv's) without any further vacuum issues? I'm thinking that air can get in whuile replacing the valves and affect the...
  3. G

    Bungs in central heating to allow rad valve replacement.

    Hi everyone, If i put a bung in the vent pipe in the central heating f&e tank and another in the cold feed from this tank to the boiler, will this allow me to change a couple of rad valves without draining down?
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