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Pressure Gauges?

Pressure Gauges?

Pressure Gauges?

(OP)
Hello,

I read the FM Global Code 7-32, and there is a rule regarding pressure gauges to reduce leakage to a minimum:

"Use restricted orifices in piping connecting the gauges to the equipment."

Would this juste be a needle valve? Or is it referring to some other device?

Thanks

Gabriel

RE: Pressure Gauges?

This would be an orifice plate or some other permanent restriction but not a valve.  The idea is that if the gauge fails you have a small hole for the material to escape through.  This is common on highly hazardous lines.

RE: Pressure Gauges?

(OP)
But if you just slightly crack open a needle valve, wouldn't it work just the same? Are there any standard parts that could be used? It is 1/4" NPT gauges that will be installed. The liquid is jet fuel.

RE: Pressure Gauges?

(OP)
But do they exist as standard parts? Or are there gauges that come with this feature? An orifice-type gauge for instance?

RE: Pressure Gauges?

Would pressure gauge Snubbers fit the bill for what you want?

Regards
Stonecold

RE: Pressure Gauges?

A cracked open needle valve will do the job but is not fool proof.
A pressure gauge snubber as suggested by Stonecold.that screwed into the connection will do the job.Snubber are commonly used for dampening out fluctuating pressure.Available off the shell.
 

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