A recent purchase from EBay Germany, really nice condition and quite compact. Running here for the first time on a little Bix gas burner:
Trying to slow it down using the whistle is a bit of a chore so a spare Wilesco whistle from the goodies box was pressed into service, came apart quite easily, would have been nice to fit it in the steam pipe boiler bush but it's a different thread so I have taken out a section of the steam pipe and soldered the new valve in. Looks neat and it works, at least on the air test!
Dave