English to Metric

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Postby sgort87 » Fri Dec 22, 2006 10:16 am

This is probably a dumb question but I need to be sure.

I have a potential customer for another Mauler valve who is in Australia. Actually, I also have another person there looking for a 3/4" valve from me. I assume that their threaded fittings are exactly the same, just in millimeters. Now, is that exactly true?

So would 2" threads be 50mm threads? Would 3/4" threads be 20mm or something like that?

Thanks guys.
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Postby spuzi14 » Fri Dec 22, 2006 11:07 am

2" threads would be 50.8mm.

3/4" threads would be 19.05mm.

That's using some program called Convert.
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Postby Velocity » Fri Dec 22, 2006 11:11 am

that is true... but a 2" fitting here does not mean 2" in diameter, and a 3/4" fitting does not mean 3/4" in diameter...

I actually thought that the fitting sizes were different. If so, you could just put a male adapter to each of your valves, and then put PVC rod in the socket. The PVC rod would have been lathed down to have internal female threads which matched the specifications of the threaded sizes in Australia

I looked for a metric conversion fitting on mcmaster, but all they had were unions, and they were super expensive
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Postby Navigator7 » Fri Dec 22, 2006 11:20 am

Gort...I know of no relationship between inch pipe fittings and metric pipe fittings.
I think AU is British Standard Taper...BST.. but I could be wrong.
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Postby MrCrowley » Mon Jan 01, 2007 12:11 am

My dad owns a mitre10 store(hardware store) and he stocks some sch40 pipe fittings but the majority is IPLEX stuff(metric BSP) and ive used the sch40 with the IPLEX and its fine.
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Postby GalFisk » Mon Jan 01, 2007 5:28 am

The threads are different (NPT vs BSPT), however the dimensions are pretty similar and you can often screw them together and get an airtight fit with a good amount of teflon tape. More info about connecting BSPT to NPT: http://www.colder.com/Downloads/NPT.pdf
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Postby TurboSuper » Mon Jan 01, 2007 8:46 am

For all your conversion needs:

http://www.engnetglobal.com/tips/convert.asp
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Postby Drew Rowland » Mon Jan 01, 2007 7:55 pm

I don't think that really has anything to do with this.
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Postby SkweezMyCheez » Mon Jan 01, 2007 10:46 pm

inform them that they may not be compatible, then if they still want them, send them your product and they have a "useless" valve
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