Dunham No1 steam trap bellows

John_198

I want to replace the steam trap bellows in my parents' house but am having trouble finding parts. They say 'Dunham No 1' on the traps. Is the best option to replace the internal bellows or should I replace the entire trap? Where can I find replacement parts?

Thanks for any info,
John

[Deleted User]

The #1 Dunham

Radiator Trap should be the same as the 1E. If so, MEPCO now makes the traps. Available repair parts, from a supply house, are cap & disc, or just the disc (bellows).

Barnes & Jones also makes the same components. They are better for trap repair than the B&J Cage Units, which require a separate cap for the 1E.

If you decide to replace the traps, be sure the replacement trap is same dimension as the Dunham. Installing taller patterns can result in trapping return line(s) beneath the floor.