User Guide

easy-e Valves
Product Flier
PF51.1:E
July 2008
20
EZ Flow Coefficients (Flow Up)
VALVE SIZE
MAXIMUM
TRAVEL
PORT
DIA.
QUICK OPENING - - - LINEAR
Valve Opening, Percent of Total Travel
10 30 70 100 100 - - - 10 30 70 100 100
DN NPS mm mm C
V
F
L - - -
C
V
F
L
- - -
- - -
25
40
1/2
3/4
1
1-1/2
19
19
19
19
33.3
33.3
33.3
47.6
1.76
3.85
4.39
5.64
4.29
9.40
14.0
20.6
4.44
9.72
16.8
33.4
4.44
9.72
16.9
34.2
.83
.88
.94
.96
- - -
- - -
- - -
- - -
- - -
- - -
2.21
3.99
- - -
- - -
5.29
11.1
- - -
- - -
11.1
25.8
- - -
- - -
13.6
31.9
- - -
- - -
.96
.96
50
80
100
2
3
4
29
38
51
58.7
87.3
111.1
13.0
30.8
50.8
44.3
92.4
159
58.4
126
219
58.6
129
223
.94
.91
.88
- - -
- - -
- - -
6.08
15.4
21.3
18.0
43.4
57.5
42.8
93.8
157
52.4
110
209
.95
.92
.89
X
T - - - - - -
X
T - - -
- - -
- - -
25
40
1-2
3/4
1
1-1/2
19
19
19
19
33.3
33.3
33.3
47.6
.364
.314
.400
.623
.764
.654
.523
.726
.894
.769
.500
.861
.894
.769
.494
.848
- - -
- - -
- - -
- - -
- - -
- - -
- - -
- - -
- - -
- - -
.638
.633
- - -
- - -
.638
.657
- - -
- - -
.636
.696
- - -
- - -
.834
.818
- - -
- - -
- - -
- - -
50
80
100
2
3
4
29
38
51
58.7
87.3
111.1
.548
.672
.733
.765
.713
.724
.831
.783
.809
.834
.774
.835
- - -
- - -
- - -
- - -
- - -
- - -
.560
.622
.554
.655
.692
.684
.779
.758
.677
.924
.888
.866
- - -
- - -
- - -
EQUAL PERCENTAGE
DN 25 (NPS 1) VALVE WITH MICRO-FORM AND
MICRO-FLUTE VALVE PLUG 19 mm TRAVEL
EQUAL PERCENTAGE CHARACTERISTIC
C
V
F
L
PORT
DIA.
C
V
F
L
DN 25
DN 40
DN 50
DN 80
DN 100
1
1-1/2
2
3
4
19
19
29
38
51
33.3
47.6
58.7
87.3
111.1
.79
.80
1.65
3.11
4.90
1.80
1.91
4.30
9.12
13.5
7.59
9.84
32.8
60.4
96.7
13.2
28.1
53.8
114
190
.96
.97
.95
.92
.90
6.4
(1)
9.5
(1)
12.7
(1)
19.1
(1)
6.4
(2)
6.4
(3)
.075
.099
.133
.276
.0385
.0562
.175
.308
.492
.965
.0560
.101
.641
1.29
2.12
4.57
.162
.433
1.52
3.07
4.91
8.84
.354
1.07
.88
.89
.93
.97
.87
.90
X
T - - -
X
T - - -
DN 25
DN 40
DN 50
DN 80
DN 100
1
1-1/2
2
3
4
19
19
29
38
51
33.3
47.6
58.7
84.3
111.1
.641
.726
.655
.619
.594
.598
.733
.520
.598
.560
.646
.597
.653
.586
.532
.886
.840
.899
.781
.834
- - -
- - -
- - -
- - -
- - -
6.4
(1)
9.5
(1)
12.7
(1)
19.1
(1)
6.4
(2)
6.4
(3)
.804
.795
.787
.723
.778
.692
.658
.641
.628
.588
.690
.639
.596
.560
.600
.603
.637
.597
.647
.662
.803
.919
.656
.624
- - -
- - -
- - -
- - -
- - -
- - -
1. Micro-Form valve plug.
2. Micro-Flute valve plug—1 flute.
3. Micro-Flute valve plug—3 flutes.
Conversion of Sizing Coefficients
Following are conversions for use with other common sizing equations.
K
v
= (0.865)C
v
C
1
= 39.76(pX
T
)
C
g
= C
v
C
1
K
m
= F
L
2
C
s
= 1/20(C
g
). C
s
is only applicable for inlet pressures up to 70 bar(a)