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Ok, I bled the rads recently and the water is more or less clear - never had any 'air' in the system ever. Daft question, how would I easily flush it, we have just 5 radiators and no inmersion. Thinking about it, I could just refill with plain water run the system and drain that out. I was...

I'm about to replace my diverter valve on my Greenstar heatslave. Do I need replace the inhibitor after the system has been depressurised by draining a bit ?. If so, what do I put in it ?. The system was installed around 2010/11 I live in Cornwall and we have very soft water if that makes any...

Anyone know if this diverter valve is the type with fiber or rubber o'rings - I don't want to buy the wrong one ! I think there are two versions The boiler was installed in 2010 (Worcester Bosch Greenstar Heatslave 18/25 external oil) The motor head is Diverter Valve 8-718-684-238 Oh yes, Do...

I have an external oil boiler Worcester Bosch Greenstar Heatslave 18/25 combi installed 2010. It has a leaking diverter valve stem, it has a 3 ports with a 2 way A B motor head. Can I replace it with another valve like this being a 2010 boiler I think it should be the type with fiber washers...