Discuss Bypass on y plan in the USA area at PlumbersForums.net
So at no point can the mid position valve be totally off like a 2 port valve so no bypass is really needed even if the pump had over run. Is that correct
Thanks yes I did think of swapping as looked abit old. But don't want to change something if it's worked like that for 20 years though appears a strange set up.Best to leave alone and just change the valve then you can’t be blamed for something not working or a rad not heating up
CorrectEph valve I think
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