Looking for Antique Furnace parts
Sorry I'm late to the party. Hopefully you've found all the parts you need. But, if not...
Here are some in the Detroit area that have parts for older heating units. Hopefully one can help & will mail the parts to you.
Detroit Safety Furnace (313) 832-2221 is a good one. They have mailed me parts when I was on the road.
They have been in business for over 100 years & the warehouse is full of hidden treasures. (At least last time I was there.) And, they are much less expensive for new items than anyone else around town.
Sometimes they are a great resource for hard to find ancient heating unit parts. If they don't have it, they are good about knowing who will have it. Very nice people.
Plan B is Atlas Plumbing Supply (313) 579-2700. I don't know for sure, but I'd imagine they mail parts. They have been around since the 1930's & have hard-to-find parts.
I will try to find out who bought the State Plumbing warehouse & business in Detroit. They have (had) everything. They have been in the same spot since about 1846 (Yep- 1800's). Their warehouse (if it is still there) is full of ancient heating & plumbing parts (and plumbing, including lead pedestal drinking fountains with birds as handles). If I find they are still around, I'll let you know.
If you feel like searching, they were originally called Park & McKay then State Plumbing on Linwood Court South of Fenkell, East of Linwood Ave in Detroit. I think I'll be in that neighborhood this week, so I'll take a look.
Good luck on the parts search!