Buon Vino filtration system -- best practices

[WinoDon]

I have an older Buon Vino mini jet and having difficulty getting the pump head parts , diaphram kit in particular. Anyone know a source?

 

[Rice_Guy]

Bon Vino is located in Canada, Cambridge, Ontario.
After I got my pump at a vinters club meeting I called them and they had stock of replacement parts.