Cla-Val 61-02KO/661-02KO Trim - Manual (Page 3)

Notes: On Operating Differential
1. For atmospheric discharge, the maximum inlet pressure cannot exceed 150 psi.
2. For pressure differentials greater than 300 psi the maximum flow velocity should not exceed 18 ft/sec.
3. Flow velocities greater than 25 ft/sec are not recommended.
4. Recommended minimum flow velocity is 1 ft/sec.
5. Consult factory for conditions exceeding these recommendations.
Model 100-01KO Flow Chart
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
100G-01KO ANTI-CAVITATION VALVE CURVES
100 10 1000 10000
FLOW RATE (gpm)
10
100
PRESSURE DROP
(psi)
400
1
300
SOLID LINE IS FULL OPEN FLOW CURVES FOR 18 FT/SEC CONTINUOUS DUTY APPLICATIONS
DASHED LINE IS FULL OPEN FLOW CURVE FOR 25 FT/SEC INTERMITTENT DUTY APPLICATIONS
100000
3"
4"
6"
8"
10"
12"
2" 24" 2 1/2 " 1 1/2 " 16"
14"
20"
36"
SELECTION GUIDELINE FOR KO ANTI-CAVITATION VALVES
400
350
300
200
150
100
50
0
0 10 20 30 40 60 50 70 80
OUTLET PRESSURE (psi)
250
INLET
PRESSURE (psi)
Cavitation
Zone
90 100
COVER
PIPE PLUG
COVER BEARING
SPRING
STEM NUT
DIAPHRAGM WASHER
DISC RETAINER
BODY
* SPACER WASHERS
PIPE PLUG
SEAT O-RING
STUD
8" and Larger
* DIAPHRAGM
* DISC
* Repair Parts
PIPE PLUG
HEX NUT
8" and Larger
KO
DISC GUIDE
STEM
(Globe
Shown)
KO
SEAT
Seat Screw
8" and Larger
Cover Bolt
6" and Smaller