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G250 and 109 have different diaphragms I believe. The 109 is smaller if I recall.Just a question about the G250/109 diaphragms, are they the same as the G200 and R190 are using?
Yup, you’re right. Just opened one of each and confirmed.A G250 will fit a 109.
Ok, thanks guys. So from what I'm reading, 109, R190, G200, and G250 should be interchangeable. Now to find a supply of these. Im rebuilding some 109's and the older diaphragms are quite stiff.
Thanks again for the help.