Cla-Val 60-73/660-73 Technical Manual User Manual
Page 11
10
20
30 40
60 80 100
200
500
1000
2000
5000
10,000 20,000 50,000
1
2
3
4
6
8
10
20
30
40
60
80
100
5
3
Angle Valve Sizes (Inches)
Globe Valve Sizes (Inches)
3
4
6
8
2
1/2
3
4
6
8
2
1/2
P
ressu
re D
ro
p
—
psi
Flow Rate gpm (water)
Model 100-30 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)
Equivalent Length of Pipe
Equivalent lengths of pipe (L) are determined from the formula:
(U.S. system units)
Fluid Velocity
Fluid velocity can be calculated from the following formula:
(U.S. system units)
d
V =
.4085 Q
2
d
C
V
Factor
Formulas for computing C Factor, Flow (Q) and Pressure Drop
V
( P):
C
V
=
Q
P
C
V
=
Q
P
C
V
=
Q
P
2
V
Where:
U.S. (gpm) @ 1 psi differential at 60 F water
(l/s) @ 1 bar (14.5 PSIG) differential
or
at 15 C water
inside pipe diameter of Schedule 40 Steel Pipe (inches)
friction factor for clean, new Schedule 40 pipe
(dimensionless) (from Cameron Hydraulic Data,
18th Edition, P 3-119)
Resistance Coefficient (calculated)
Equivalent Length of Pipe (feet)
Flow Rate in U.S. (gpm) or (l/s)
Fluid Velocity (feet per second) or (meters per second)
Pressure Drop in (psi) or (bar)
=
=
=
=
=
=
=
=
=
P
V
Q
L
K
f
d
C
Functional Data
Model 100-30
*Estimated
Valve Size
Inches
2
1
⁄
2
3
4
6
8
mm.
65
80
100
150
200
C
V
Factor
Globe
Pattern
Gal./Min. (gpm.)
85
115
200
440
770
Litres/Sec. (l/s.)
20
28
48
106
185
Angle
Pattern
Gal./Min. (gpm.)
101
139
240
541
990
Litres/Sec. (l/s.)
24
33
58
130
238
Equivalent
Length
of
Pipe
Globe
Pattern
Feet (ft.)
53
85
116
211
291
Meters (m.)
16
26
35
64
89
Angle
Pattern
Feet (ft.)
37
58
80
139
176
Meters (m.)
12
18
25
43
54
K
Factor
Globe Pattern
4.6
6.0
5.9
6.2
6.1
Angle Pattern
3.3
4.1
4.1
4.1
3.7
Liquid Displaced from
Cover Chamber When
Valve Opens
Fl. Oz
—
—
—
—
—
U.S. Gal.
.04
.08
.17
.53
1.26
ml
163
303
643
—
—
Litres
—
—
—
2.0
4.8