CLA-VAL 100-02, Installation And Operation Maintenance

Page: 13 / 42

Model 100-21 Flow Chart
(Based on normal flow through a wide open valve)
K =
894d
4
C
2
v
L =
K
12 f
K Factor (Resistance Coefficient)
The Value of K is calculated from the formula:
(U.S. system units)
Equi va len t L eng t h of Pipe
Eq ui v alent len g ths of p i p e ( L ) are determined from the formula:
(U.S. system units)
F lui d V el oc i t y
F luid v elocity can b e calculated from the follo w in g formula:
(U.S. system units)
d
V =
. 4 0 8 5 Q
2
d
C
V
Factor
F ormulas for com p utin g C F actor , F lo w ( Q ) and P ressure D ro p
V
( P ):
C
V
=
Q
P
C
V
=
Q
P
C
V
=
Q
P
2
V
W he r e :
U.S. ( gp m) @ 1 p si differential at 60 F w ater
(l / s) @ 1 b ar ( 14 . 5 P S IG ) differential
or
at 15 C w ater
inside p i p e diameter of Schedule 40 Steel P i p e (inches)
friction factor for clean , ne w Schedule 40 p i p e
(dimensionless) (from Cameron H ydraulic D ata ,
18 th E dition , P 3-119 )
Resistance Coefficient (calculated)
Eq ui v alent L en g th of P i p e (feet)
F lo w Rate in U.S. ( gp m) or (l / s)
F luid Velocity (feet p er second) or (meters p er second)
P ressure D ro p in ( p si) or ( b ar)
=
=
=
=
=
=
=
=
=
P
V
Q
L
K
f
d
C
3
80
62
15
—
—
293
89.3
—
—
20.6
—
—
.032
—
.12
4
100
136
32.5
135
32
251
76.4
254
77.6
12.7
12.9
—
.08
—
.30
6
150
229
55
233
56
777
237.1
751
229
23.1
22.3
—
.17
—
.64
8
200
480
115
545
132
748
228.1
580
176.9
15.7
12.2
—
.53
—
2.0
10
250
930
223
—
—
621
189.5
—
—
10.4
—
—
1.26
—
4.8
12
300
1458
350
—
—
654
199.4
—
—
8.5
—
—
2.51
—
9.5
14
350
1725
414
—
—
750
228.7
—
—
8.9
—
—
4
—
15.1
16
400
2110
506
—
—
977
298.1
—
—
10.2
—
—
4
—
15.1
18
460
2940
705
—
—
983
299.9
—
—
8.4
—
—
9.6
—
36.2
20
510
3400*
816
—
—
1125
343.2
—
—
8.8
—
—
9.6
—
36.2
24
610
3500*
840
—
—
3005
916.6
—
—
19.1
—
—
9.6
—
36.2
30
750
7900*
1895
—
—
2130
649.6
—
—
10.5
—
—
29.0
—
110
Globe
Pattern
Angle
Pattern
Globe
Pattern
Angle
Pattern
Equivalent
Length
of
Pipe
C
V
Factor
Functional Data Model 100-21
*Estimated
Valve Size
Liquid Displaced
from Diaphragm
Chamber When
Valve Opens
K
Factor
mm
Gal./Min. (gpm.)
Litres/Sec. (l/s.)
Gal./Min. (gpm.)
Litres/Sec. (l/s.)
Feet (ft.)
Meters (m.)
Feet (ft.)
Meters (m.)
Fl. Oz
U.S. Gal.
ml
Litres
Inches
Globe Pattern
Angle Pattern