Avoiding draining raditors by shutting both valves off

Joined
9 Aug 2009
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Blackpool
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Hey when draining a central heating system if you shut both raditor valves off on each raditor to avoid draing all the water from the raditors when refilling how do you vent the water from the pipework when refilling?
 
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Unfortunately a lot of the thermostatic valves don't shut properly
and a full drain is required anyway.
 
ok when reopen the valves does all the water go back in to the pipework? Then bleed the raditors as usual?
 
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When refilling open the radiator valves then bleed as normal.
 

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