| To
Calculate Liquid Flow (water) through Orifice |
| Estimated Cv Values |
Orifice Size |
|
| |
|
|
|
| |
0.00001 |
0.0008" |
Q =Cv√ DP |
| |
0.00003 |
0.0012" |
Q = GPM (gallons per minute) |
| |
0.000053 |
0.0016" |
P = pressure differential in PSIG |
| |
0.000090 |
0.0020" |
Cv = flow factor |
| |
0.00012 |
0.0024" |
|
| |
0.00017 |
0.0028" |
Example for flow of .005" orifice |
| |
0.00022 |
0.0031" |
at 25 psi |
| |
0.00028 |
0.0035" |
|
| |
0.00035 |
0.0040" |
Q =Cv√ DP |
| |
0.00061 |
0.0050" |
Q
= .00061 x √ 25 |
| |
0.00086 |
0.0060" |
Q = .00061 x 5 |
| |
0.00120 |
0.0070" |
Q = .003 GPM |
| |
0.00150 |
0.0080" |
|
| |
0.00190 |
0.0090" |
To
convert GPM to liters P/M |
| |
0.0025 |
0.0100" |
3.75
liters per gallon |
| |
0.0028 |
0.0110" |
.003
x 3.75 = .01125 liters P/M |
| |
0.0034 |
0.0120" |
|
| |
0.0038 |
0.0130" |
To
convert to milliliters (CCM's) |
| |
0.0043 |
0.0140" |
1,000
CCM's = 1 liter |
| |
0.0050 |
0.0150" |
1,000
x .01125 = 11.25 ML/PM |
| |
0.0055 |
0.0160" |
|
| |
0.0067 |
0.0170" |
The
Cv factor is based on the |
| |
0.0073 |
0.0180" |
number of U.S. gallons of water |
| |
0.0080 |
0.0190" |
that can pass through a given |
| |
0.0088 |
0.0200" |
orifice area in one minute at a |
| |
0.0096 |
0.0210" |
pressure drop of one psi |
| |
0.011 |
0.0220" |
|
| |
0.012 |
0.0230" |
Q =Cv√ (DP/S.G.) |
| |
0.013 |
0.0240" |
|
| |
0.014 |
0.0250" |
Liquid Flow Values are Based on |
| |
0.020 |
0.030" |
60 degree F and are Estimates Only |
| |
0.028 |
0.035" |
|
| |
0.036 |
0.040" |
|
| |
0.041 |
0.043" |
|
| |
0.048 |
0.047" |
|
| |
0.059 |
0.052" |
|
| |
0.081 |
0.060" |
|
| |
0.088 |
0.063" |
|
| |
0.100 |
0.067" |
|
| |
0.110 |
0.070" |
|
| |
0.120 |
0.073" |
|
| |
0.140 |
0.079" |
|
| |
0.150 |
0.081" |
|
