Valve CV Sizing Liquids Gases
Valve CV Sizing Liquids Gases
Valve CV Sizing Liquids Gases
SERVICE FLUID
LIQUID
320
1.1
Cv =
Cv(max) =
1.16w / S Gr x DELTA P
5.8
Cv(Nor) =
8.2
Cv(Min) =
11.7
10
FROM mm OF wc
CONVERSIONS :
1
TO CONVERT PRESSURE.
FROM BAR
TO CONVERT TEMPERATUR
FROM 0 C
Where Gr = Specific Gravity of the fluid at flowing
temperature.
Gr = G x ( 288 / T ) =
0.990
0.000
TO CONVERT PRESSURE.
INPUT
VALUE IN BARA
1.0130
1.0130
TO CONVERT TEMPERATURE.
INPUT
VALUE IN 0K.
273
bar
SERVICE FLUID
LIQUID
Cv =
Cv(max) =
1.16QS Gr / DELTA P
#DIV/0!
Cv(Nor) =
#DIV/0!
Cv(Min) =
#DIV/0!
Gr = G x ( 288 / T ) =
#DIV/0!
FROM mm OF wc
0.000
CONVERSIONS :
1
TO CONVERT PRESSURE.
INPUT
FROM BAR
4.9358
1.013
TO CONVERT TEMPERATURE.
INPUT
FROM 0 C
VALUE IN BARA
VALUE IN 0K.
273
bar
SERVICE FLUID
GAS
Cv =
Cv(max) =
#DIV/0!
Cv(Nor) =
#DIV/0!
Cv(Min) =
#DIV/0!
GAS
Gr = G x ( 288 / T ) =
#DIV/0!
FROM mm OF wc
0.000
CONVERSIONS :
1
TO CONVERT PRESSURE.
subcritical.
INPUT
VALUE IN BARA
1.0130
FROM BAR
1.0130
TO CONVERT TEMPERATURE.
INPUT
FROM 0 C
VALUE IN 0K.
273
bar
SERVICE FLUID
GAS
10800
3600
4140
0.000
0.000
0.000
0.000
0.000
0.000
DELTA P - SIZING
0.001
0.001
0.002
318
Cv =
Cv(max) =
#DIV/0!
Cv(Nor) =
#DIV/0!
Cv(Min) =
#DIV/0!
10
17.99
CV
2.6
17
14.1
CV1
CV2
CV
4740
32
CV1
36
CV2
5580.00
34.0
CONVERSIONS :
1
TO CONVERT PRESSURE.
FROM BAR
FROM mm OF wc
INPUT
VALUE IN BARA
3.9551
0.001
1.0140
10
0.001
TO CONVERT TEMPERATURE.
INPUT
FROM 0 C
45
1.0135
1.0135
1.014
1.014
1.0149
1.0149
VALUE IN 0K.
318
bar
SHEET FOR VALVE SIZING CALCULATIONS FOR FLOW IN KG / HR & P > P1/2
CONDITION - FLOW MEDIUM GAS / FLOW IS BY WEIGHT.
INPUT DATA
1
SERVICE FLUID
GAS
120
6.1
4.1
373
1.16
1
0.8
Cv =
Cv(max) =
54.5 w S Z / (CF x P1 x S GF )
1244.3
Cv(Nor) =
0.0
Cv(Min) =
0.0
GAS
Gr = G x ( 288 / T ) =
0.896
FROM mm OF wc
0.000
CONVERSIONS :
1
TO CONVERT PRESSURE.
subcritical.
INPUT
VALUE IN BARA
1.0130
FROM BAR
1.0130
TO CONVERT TEMPERATURE.
INPUT
FROM 0 C
100
VALUE IN 0K.
373
bar
SERVICE FLUID
GAS
1575
1365
8.013
8.013
7.513
7.513
DELTA P - SIZING
0.500
0.500
333
0.865
1
SELECTED Cv
258
0.0
GAS
343
220.5
8.013
2.513
5.500
80
93.89
CV
230
258
268.9
CV1
CV2
CONVERSIONS :
1
TO CONVERT PRESSURE.
w is subcritical.
FROM Kg/Cm2 (g)
INPUT
VALUE IN BARA
3.9551
FROM BAR
FROM mm OF wc
1.0130
10400
1.010
TO CONVERT TEMPERATURE.
INPUT
FROM 0 C
VALUE IN 0K.
273
VALUE IN BARA
3.9551
1.0130
1.010
VALUE IN 0K.
273
bar