best bet for a heater valve im afriad is landrover!! n at over £120 a go v dear, but better than the 1 i got from add in a mag n it lasted 4months n v little use it had nal... n better 2 pay put 4 nu valve than a nu engine...
its a v8 valve you want, (not s111) thas why there hard to get hold of, its situated on top at the back of the engien behind the carbs,, mite be worth looking at sd1s n see if they use the same valves.. will have a look at the sd1 rover club n see if can find out for you... i no when i got mine landrover didnt have too many left...
the other way round it is, if you look at the inlet n outlet pipes, its poss to find another type of valve that has the same amount of inlets n outlets n you can find a way to opperate it, then no resone why it wont work, its realy on a switch, but for water!!
have had my new valve on for over two yrs n its still very stiff, think its just the way thay are....
