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Join Date: Mar 2007
Location: Bangalore-India
Posts: 22

NPT Fittings for Hydrogen Pipe Lines

02/02/2009 5:39 AM

Can we use NPT fitting on the Hydrogen pipe lines?

-Nava

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Guru
United Kingdom - Member - Indeterminate Engineering Fields - Control Engineering - New Member

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#1

Re: NPT Fittings for Hydrogen Pipe Lines

02/02/2009 12:08 PM
  • Temperature?
  • Pressure in the line?
  • Flowrate?
  • Line size?
  • Materials of construction of the line?
  • Secondary containment?
  • Lagging material?
  • Sources of ignition nearby?
  • Indoors or outdoors?
  • What does the operating organisation's Piping Standard say on the subject?
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Guru

Join Date: Feb 2006
Location: Piney Flats, Tennessee
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#2

Re: NPT Fittings for Hydrogen Pipe Lines

02/03/2009 12:27 AM

good luck if you have to ask this !

keep some cotten towel hanging around where you are working at least then you will see the fire before the explosion .

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Guru
Engineering Fields - Piping Design Engineering - New Member Egypt - Member - Member since 02/18/2007

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Location: Cairo, Egypt
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#3

Re: NPT Fittings for Hydrogen Pipe Lines

02/03/2009 2:28 AM

Nooooooooooooooooooooo. Only may be used for small sizes flexible and armoured hoses.

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Power-User
United States - Member - New Member Engineering Fields - Chemical Engineering - New Member

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Location: Austin, TX
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#4

Re: NPT Fittings for Hydrogen Pipe Lines

02/03/2009 4:06 PM

Instrumentation was the only thing I ever saw threaded in a hydrogen plant or pipeline.

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Guru
Popular Science - Weaponology - New Member Hobbies - Fishing - New Member

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#5

Re: NPT Fittings for Hydrogen Pipe Lines

02/04/2009 12:50 PM

NO!

I don't care how carefully/tightly you assembly this. Pipe threads will leak hydrogen.

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