CVS Controls DBQ Series - Page 14

CVS Series DBAQ: Product Bulletin
Flow Coefficients: M-Form Valve Plug
Flow Up – Equal Percent
Body
Size
(Inches)
Port
Diameter
Total
Travel
Valve Opening – Percentage of Total travel
F
L
*
In.
mm
In.
mm
10
20
30
40
50
60
70
80
90
100
C
V
1
1/4
3/8
1/2
6.4
9.5
12.7
3/4
3/4
3/4
19
19
19
.067
.121
.230
.109
.163
.425
.170
.271
.603
.237
.443
.861
.324
.616
1.19
.449
.887
1.65
.632
1.29
2.25
.891
1.82
3.07
1.27
2.47
4.14
1.62
3.19
5.38
.95
.97
.95
3/4
19.1
3/4
1
a
19
25
a
.265
---
.531
---
.871
---
1.38
---
2.03
---
3.01
---
4.58
---
6.67
---
8.5
---
9.66
11.0
.89
.89
2
1/4
3/8
1/2
3/4
1
6.4
9.5
12.7
19.1
25.4
3/4
3/4
3/4
3/4
3/4
19
19
19
19
19
.103
.101
.193
.378
.684
.137
.168
.380
.634
1.08
.184
.263
.561
.971
1.66
.243
.399
.794
1.44
2.52
.321
.585
1.12
2.12
3.80
.440
.850
1.58
3.16
5.72
.628
1.22
2.23
4.75
8.52
.875
1.73
3.16
6.96
12.5
1.21
2.45
4.33
9.48
16.1
1.59
3.27
5.55
11.7
19.2
.97
.97
.97
.95
.92
1-
1/4
31.8
3/4
1
a
19
25
a
.885
---
1.28
---
1.81
---
2.69
---
4.27
---
9.48
---
13.3
---
19.0
---
23.1
---
27.2
33.8
.92
.92
X
T
1
1/4
3/8
1/2
6.4
9.5
12.7
3/4
3/4
3/4
19
19
19
.762
.369
.443
.548
.411
.585
.392
.341
.588
.419
.490
.557
.476
.639
.547
.548
.609
.565
.565
.589
.603
.582
.626
.647
.602
.679
.684
.666
.784
.780
--
--
--
3/4
19.1
3/4
1
a
19
25
a
.843
---
.641
---
.596
---
.560
---
.566
---
.594
---
.601
---
.625
---
.659
---
.686
.608
--
--
2
1/4
3/8
1/2
3/4
1
6.4
9.5
12.7
19.1
25.4
3/4
3/4
3/4
3/4
3/4
19
19
19
19
19
.482
.434
.792
.774
.647
.417
.306
.754
.647
.645
.420
.425
.687
.645
.659
.479
.537
.665
.649
.644
.522
.522
.635
.658
.623
.563
.519
.618
.651
.612
.548
.535
.600
.623
.614
.565
.569
.600
.624
.621
.591
.611
.663
.664
.721
.643
.720
.748
.731
.784
--
--
--
--
--
1-
1/4
31.8
3/4
1
a
19
25
a
.671
---
.629
---
.624
---
.598
---
.544
---
.343
---
.684
---
.711
---
.774
---
.774
.698
--
--
Flow Down – Equal Percent
C
V
1
1/2
3/4
12.7
19.1
3/4
3/4
19
19
.452
.600
.832
1.10
1.28
1.76
1.85
2.93
2.46
4.05
3.19
5.18
4.22
6.70
5.30
8.49
6.56
10.0
8.00
10.8
.56
.81
2
1/2
3/4
1
12.7
19.1
25.4
3/4
3/4
3/4
19
19
19
.452
.600
1.19
.832
1.10
2.00
1.28
1.71
2.92
1.85
2.40
4.15
2.46
3.23
5.83
3.19
4.90
8.05
4.38
7.10
10.7
6.33
9.43
14.5
7.05
12.6
19.0
9.04
16.9
24.1
.55
.57
.64
1-
1/4
31.8
3/4
1
a
19
25
a
1.85
---
2.73
---
3.55
---
5.15
---
6.21
---
9.76
---
16.7
---
25.2
---
32.3
---
35.5
38.3
.69
.69
X
T
1
1/2
3/4
12.7
19.1
3/4
3/4
19
19
.210
.195
.162
.166
.133
.160
.125
.136
.134
.155
.144
.221
.165
.280
.196
.368
.245
.493
.303
.587
--
--
2
1/2
3/4
1
12.7
19.1
25.4
3/4
3/4
3/4
19
19
19
.210
.195
.158
.162
.166
.139
.123
.170
.152
.125
.202
.190
.134
.243
.218
.157
.239
.256
.168
.257
.312
.159
.328
.370
.254
.352
.413
.267
.314
.412
--
--
--
1-
1/4
31.8
3/4
1
a
19
25
a
.134
---
.115
---
.127
---
.145
---
.253
---
.325
---
.368
---
.371
---
.370
---
.404
.461
--
--
*At 100% Travel
a
Valve travel may be up to 1 in. (25mm) with slight sacrifice in flow characteristic.
Note: K
V
= (0.865) (C
V
)