Hi All,
I have just rebuilt my FDV following the excellent description on the FAQ forum. There is a small o-ring seal in the repair kit left over after the job, and I can't remember seeing one when I removed and dismantled the FDV. The seal is shown at the top left of this picture taken from the FAQ post:
Does anyone know what this o-ring seal is for? Perhaps it has something to do with the pressure adjustment screw that is recommended not to touch?
Cheers,
Ade