User guide
Model 100-02
8
1046
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
53
Angle Valve Sizes (Inches)
Globe Valve Sizes (Inches)
2
34
6
810
12
12
24
1
1/2
21/2
11/2
23
14
16
16
1
1/4
21/2
Pressure Drop — psi
14
Flow Rate gpm (water)
20
30
1
18
1/2*1*3/4*
(*Non Guided Stem)
3/8*
Model 100-02 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
*Estimated
Valve Size
Inches
3
⁄8
1
⁄2
3
⁄4 1 1
1
⁄4 1
1
⁄2 2 2
1
⁄2 3 4 6 8 10 12 14 16 18 20 24 30
mm.
10 15 20 25 32 40 50 65 80 100 150 200 250 300 350 400 450 500 600 750
C
V
Factor
Globe
Pattern
Gal./Min. (gpm.)
1.8 6 8.5 13.3 30 32 54 85 115 200 440 770 1245 1725 2300 2940 3725 5345 7655 10150
Litres/Sec. (l/s.)
.43 1.44 2.04 3.2 7.2 7.7 13 20 28 48 106 185 299 414 552 706 894 1286 1837 2436
Angle
Pattern
Gal./Min. (gpm.)
— — — — — 29 61 101 139 240 541 990 1575 2500* 3060* 4200* — — — —
Litres/Sec. (l/s.)
— — — — — 7 15 24 33 58 130 238 378 600 734 1008 — — — —
Equivalent
Length
of
Pipe
Globe
Pattern
Feet (ft.)
25 7 16 23 19 37 51 53 85 116 211 291 347 467 422 503 612 595 628 1181
Meters (m.)
7.6 2.2 4.8 7.1 5.7 12 15.5 16 26 35 64 89 106 142 129 154 187 181 192 552
Angle
Pattern
Feet (ft.)
— — — — — 46 40 37 58 80 139 176 217 222* 238* 247* — — — —
Meters (m.)
— — — — — 14 12 12 18 25 43 54 66 68 73 75 — — — —
K
Factor
Globe Pattern
16.3 3.7 5.7 6.1 3.6 5.9 5.6 4.6 6.0 5.9 6.2 6.1 5.8 6.1 5.0 5.2 5.2 4.6 4.0 5.3
Angle Pattern
— — — — — 7.1 4.4 3.3 4.1 4.1 4.1 3.7 3.6 2.9 2.8 2.6 — — — —
Liquid Displaced from
Cover Chamber When
Valve Opens
Fl. Oz
.12 .34 .34 .70 — — — — — — — — — — — — — — — —
U.S. Gal.
— — — — .02 .02 .03 .04 .08 .17 .53 1.26 2.51 4.0 6.5 9.6 11 12 29 42
ml
3.5 10.1 10.1 20.7 75.7 75.7 121 163 303 643 — — — — — — — — — —
Litres
— — — — — — — — — — 2.0 4.8 9.5 15.1 24.6 36.2 41.6 45.4 109.8 197