Hi Guys Thanks for the responses.
I think I will buy a new head rather than fiddle around with it
Attached is a photo, no idea what make it is. Does this look familiar and can I use a v4073?
Thanks
Hi All
I have researched this all over the web and there seems to be varied answers on the problem, so I'm posting here hoping someone has had the same issues.
Basically I have a central heating system with a zone valve that I can set hot water, Heating or both on. Recently the zone valve...