orifice size chart?

[mmilbury]

Is there a chart that will relate the orifice size A, B, C, etc. to the size hole?

Thanks.

----
An optimist sees the cup half full
A pessimist sees it half empty
An engineer sees it twice as large as it needs to be.

 

[mgp]

Try this link

http://www.emersonprocess.com/danie...ice/Plates/Ds_sheets/Orifice Plates 563KB.pdf

hope this helps

regards
Mogens

 

[Montemayor]

mmilbury:

You failed to say what type or use of "orifice" you mean. As a result, Mogens has assumed you mean orifice plates. I think you may be referring to the orifice size of Safety Relief Valves, where the nomenclature is as follows:

Orifice Letter /Area, in2
D / 0.110
E / 0.196
F / 0.307
G / 0.503
H / 0.785
J / 1.287
K / 1.838
L / 2.853
M / 3.600
N / 4.340
P / 6.380
Q / 11.05
R or S / 16.00*
T / 19.64*
T or U / 26.00*

* = Code Letters and orifice areas not consistent for these large orifices between various manufacturers.

I hope this is what you needed.

Art Montemayor
Spring, TX

 

[mmilbury]

thanks both of you. This is exactly what I am looking for.

----
An optimist sees the cup half full
A pessimist sees it half empty
An engineer sees it twice as large as it needs to be.