I have used the American Limited ones on most of my Athearn streamliners and also on the F3/F7 diesels. They work quite well, but these are not brass models so I don't know how they will attach; CA I guess.
-Bob
Life is what happens while you are making other plans!
American Limited Models is one source. Sheldon prefers this brand.
http://www.americanlimitedmodels.com/category_s/1670.htm
Another source is Hi Tech Details.
http://www.hitechdetails.com/Hi-Tech-P_Car_Diaphragms.html
Rich
Alton Junction
I am looking to add working diaphragms on some Overland brass Superliner cars. I have the brass ones that shipped with the cars, but having some working ones would be nice. I have searched and have seen options, but I am really looking to hear from somebody who has some.
American Limited Models seems to have some that are close. Precision Scale Co. has something listed but it is special order or something.
Images of all of these are pretty much useless.
FURX NS CSX in HO