re: N2 Gas bottle and circuit - Pressure, sizing requirement

[TurbineBlade]

Hi,

I would like to acquire information on the selection of N2 cylinder (size,pressure rating, temperature etc) and the necessary components such as pressure regulator.

The application that I am dealing with is to use N2 to pressurize an accumalator up to 70 psig (N2 on one side; water on the other side) in a pump differential pressure instrument loop for testing purpose. The tubing is preliminary selected to be 3/8".

Also, is a gas bottle required to meet the ASME code?

What codes and standards used in the compressed gas industry in Canada.

Your help is highly appreciated.

 

[BigInch]

Gas bottles are designed to DOT Title 49 standards (don't recall which paragraph) in the USA. I think there is a corresponding CT standard for Canada. As I recall, they come in 2400, 3600 and 5000 psi bottles.

I would use a two stage regulator, with intermediate pressure at about 100 psi or so.

You can find more info here,

http://en.wikipedia.org/wiki/Gas_cylinder

http://virtualpipeline.spaces.msn.com

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