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Nitrogen pipe/valve types

Nitrogen pipe/valve types

Nitrogen pipe/valve types


I am still new to the field, and I'm not sure about this, but is there a standard/usual valve type to use on nitrogen lines? Or can I use the same valves that I'm using on liquid lines elsewhere? For example, if I have a 1" reduce-port ball valve on a liquid drain line, would it be appropriate to use the same valve on my 1" nitrogen lines? On that note, what pipe material is generally used for nitrogen?

Thanks! :D

RE: Nitrogen pipe/valve types

See the thread below regarding your particular valve examples. Short answer is you're probably fine so long as the material of construction is appropriate.
thread408-20283: When is a reduced port ball valve a better choice?

Pipe material will depend on operating conditions; if you're going to have cold temps then stainless is likely needed. See thread below for a small discussion of this question.
thread124-238402: Nitrogen Stainless Steel Piping

RE: Nitrogen pipe/valve types

gaseous nitrogen or liquid nitrogen?
high purity gas lines (such as from bulk supply) are usually either Cu (heavy such as K) or stainless steel (sch 5 pipe is common). Valves are selected for leak resistance, after all every leak is a source for air to get into the system. Liquid service valves are usually not good enough.

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P.E. Metallurgy, Plymouth Tube

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