47 581 30 is councle no

On H/W only radiator outlet gets hot, infact hotter than hot water outlet and hotter quicker also.

Hows it cheaper to replace?? in the long run kind of thing?? Its odd, the Diaphram looks fine, it isnt full of sludge etc.....

Cant find a Diaphram service kit for it, its a LS80 model too