I kind of have a extras but then again there are different types of Weeden safety valves that are spring loaded. I could be enticed on a swap, not looking to sale them - so depends on what kind of Weeden parts you have to swap! That is a bit of a tease, assuming the ones I have is what you need. If I had three, I'd surely let one go.
here is what I got, one brass & one nickel based - both have brass steams.
[ Guests cannot view attachments ]