In message , Dean
Heighington writes
I've tried googling but as with most engineering
component manufacturers, the name you see on
the part is usually completely unassociated with
the name of the company that produces it... in my
experiences anyway!!

My dad's CH and HW system uses "Lifestyle"
components who, according to the labels are based
in West Dreyton (Drayton?) in London.

ACL Lifestyle ?

White bit in the middle of the head?

Just chucked a load out

--
geoff