I am a newbie to the forums, but have been a member of a few others..
Anyway reading all the advice on the dreaded
valve, i decided to purchase a new one, remove the old one to clean up, and keep this as a spare, putting the new one in
(thats the theory anyway
So duly undid the 3 bolts to find the valve stuck fast... after pulling and pushing noticed some movement when - crack the old valve snapped in two!!!
So am left with the top part in my hand, the remains stuck in the housing
After copious amounts of wd40 managed to free the bottom part and insert new valve after greasing with copper slip to aid removal next time!
Thought would just post this as a warning to others