On Sat, 24 Dec 2016 11:40:22 +0000, Tim Lamb
wrote:

OK so rhetorical question and a lead in to a self congratulatory
piece:-)

If it isn't general knowledge, the drive motors for Honeywell 2 and 3
port valves are identical and don't seem to have changed in the last 20
years! Being an inveterate Squirrel I happened to have one from the R.
Cottage strip out.

Happy Christmas to all.

Is it a successor to the millennium bug?