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  1. K

    Is this an isolator valve for central heating pump?

    oldbuffer, thanks for the detailed information. Very useful and after reading your reply, realized that the water from the cylinder will definitely flow unless it's empty. The other outlet is going downwards to perhaps less chance of water flowing with the system shutdown (I'm guessing?). On...
  2. K

    Is this an isolator valve for central heating pump?

    Hello everyone, Can someone please confirm if this (marked in red in both pictures) is the isolator valve? If so, will shutting this off will prevent water to flow to the 3 port valve connected below the pump (picture2)? We need to replace the 3 port valve body and need to know if we can do...
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