Urgent, where to buy mm tube in the US

bigds01July 15, 2013

Any ideas where to buy mm measured tube in the US? I need 15mm not 1/2".

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llaatt22

Since 15mm is an external "pipe" measurement and 1/2" is an internal "tube" measurement, how far off 15mm is the 1/2" external measurement?

    Bookmark   July 16, 2013 at 9:38AM
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bus_driver

"15mm is an external "pipe" measurement and 1/2" is an internal "tube"

If this is true, the OD of the 15mm is smaller than the ID of 1/2" pipe. According to my brief search, 3/8 pipe could be turned in a lathe to match 15mm. If just one end needs to be 15mm, that could solve the problem. Brass pipe solders easily if that will help.

    Bookmark   July 16, 2013 at 7:56PM
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llaatt22

If the OP is going by convention:

then 1/2" copper tubing would be 5/8" outer diameter
and
that converts to 12.7mm inner dia and 15.875mm outer dia

While it may not pass inspection on a rocket engine or get passed on a building permit for plumbing, it and the standard connecting bits do sound "sorta close enough".

    Bookmark   July 16, 2013 at 11:16PM
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PRO
Sophie Wheeler

Close only counts in horseshoes. In plumbing, with water under pressure, it's a sure recipe for a leak. Jury rigged half asseries have a good chance of not being covered by your homeowners insurance when they fail. Trying to hook up BSP to standard American plumbing requires the correct adapters. You were given a source for adapters, plus the manufacturer sells a kit to do it. I'd suggest you going one or the other route rather than striking out boldly where no one has gone before. It's for a reason.

    Bookmark   July 17, 2013 at 11:00AM
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