Cla-Val 50-20 - Manual (Page 9)

Model 100S/2100S 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 100S/2100S
*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 24 36
mm. 10 15 20 25 32 40 50 65 80 100 150 200 250 300 350 400 600 900
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 7655 13320
Litres/Sec. (l/s.) .43 1.44 2.04 3.2 7.2 7.7 13 20.4 27.6 48 105.6 184.8 299 414 552 706 1837 3200
Angle
Pattern
Gal./Min. (gpm.) — — — — — 29 61 101 139 240 541 990 1575 2500* 3060* 4200* — —
Litres/Sec. (l/s.) — — — — — 7 14.6 24.2 33.4 58 130 238 378 600 734.4 1008 — —
Equivalent
Length
of
Pipe
Globe
Pattern
Feet (ft.) 25 7 16 23 19 37 51 53 85 116 211 291 347 467 422 503 628 1866
Meters (m.) 7.6 2.2 4.8 7.1 5.7 11.4 15.5 16.0 25.9 35.3 64.2 88.6 105.8 142.4 128.6 153.6 191.6 569
Angle
Pattern
Feet (ft.) — — — — — 46 40 37 58 80 139 176 217 222* 238* 247* — —
Meters (m.) — — — — — 13.9 12.1 11.4 17.8 24.5 42.5 53.6 66.1 67.8 72.7 75.2 — —
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 4.0 7.1
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 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 36.2 109.8 159
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)
1/2 1 2 3 4 6 8 10 12
12
24 3/4
1 1/2
2 1/2
1 1/2
2 3 4 6 8 10
14 16
16
1 1/4
2 1/2
Pressure Drop — psi
14
Flow Rate gpm (water)
1
36
100,000