Archive for The Unofficial Mamod and Other Steam Forum The Original Unofficial Toy Steam Forum
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oldstuff
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Union Nut and Olive Steam FittingIn another post, Mamod Fan mentioned a union nut fitting and olive. I thought
I'd show some close-ups of the 1/8" one I used on a recent engine I made
(see Scratchbuilt, Homebuilts thread).
Though it's larger compared to those made for commercial engines, the effect is
not too bad with the 2" diameter boiler I used it for. When I bought them at
the hardware store they were less than $3.00 each and you can make two
fittings from each one.
Pretty economical, a better appearance than the usual pipe soldered
straight to the boiler, and much easier to disconnect when necessary.
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Minor1PJG
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That's lovely.
Just what I needed but I've fitted a small rubber o-ring for the moment 
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xlchainsaw
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much easier than putting a flare on the end of the copper tube
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johnreid
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I dont find 1/8" pipe all that easy to find, I think that the next time I find myself at a regular plumbing supply house I might have to investigate that.
Compression fittings do an excellent job of sealing too.
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xlchainsaw
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dont forget to checkout auto shops for fittings as such things like brake lines use similar fittings.
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