Bray/mccannalok hpbv – valve sizing coefficients – Bray 40_41 User Manual
Page 18
Bray/McCannalok HPBV – Valve Sizing Coefficients
All information herein is proprietary and confidential and may not be copied or reproduced without the expressed written consent of BRAY INTERNATIONAL, Inc.
The technical data herein is for general information only. Product suitability should be based solely upon customer’s detailed knowledge and experience with their application.
Coefficients : 18
ASME 300 Series 42/43/4B
- Valve Sizing Coefficient (Cv)
Valve
Size
Inches
Disc Position (Degrees)
90º
80º
70º
60º
50º
40º
30º
20º
10º
2 1/2
160
136
100
78
50
30
16
8
3
3
185
178
155
123
87
56
32
14
5
4
375
365
315
250
175
115
63
31
10
5
790
675
500
360
238
146
78
41
16
6
1,000
875
710
530
370
240
138
79
26
8
2,000
1,720
1,360
950
630
405
240
121
47
10
2,650
2,250
1,740
1,200
780
510
295
150
61
12
4,000
3,400
2,500
1,690
1,100
710
430
220
92
14
4,100
3,500
2,600
1,770
1,200
830
490
240
100
16
7,800
6,540
4,550
2,970
1,840
1,160
730
420
180
18
9,500
8,000
6,170
4,530
3,110
1,970
1,080
440
94
20
11,000
9,570
7,300
5,400
3,720
2,330
1,250
530
110
24
18,000
15,100
11,400
8,570
5,920
3,700
2,000
830
180
30
29,000
24,400
18,900
13,700
8,500
6,000
3,230
1,330
290
36
45,000
38,100
29,200
21,000
14,800
9,100
4,660
1,730
380
42
60,000
54,000
42,000
30,000
19,000
13,000
7,500
2,600
450
48
83,000
74,000
58,000
41,000
26,000
17,000
10,000
4,400
800
54
Please Consult Factory
ASME 600 Series 44/45
- Valve Sizing Coefficient (Cv)
Valve
Size
Inches
Disc Position (Degrees)
90º
80º
70º
60º
50º
40º
30º
20º
10º
3
165
158
135
103
67
46
12
8
3
4
300
270
210
150
95
70
45
30
5
6
800
765
600
425
270
200
130
70
15
8
1,500
1,350
1,050
750
480
345
209
78
20
10
2,200
1,970
1,540
1,100
700
500
300
140
40
12
3,100
2,790
2,170
1,550
1,000
680
400
190
55
14
3,900
3,300
2,400
1,570
1,100
730
420
200
70
16
5,000
4,200
2,900
1,900
1,200
800
500
250
95
18
6,000
5,000
3,900
2,800
1,900
1,200
660
290
130
20
8,000
6,900
5,300
3,900
2,700
1,700
950
400
143
24
11,000
9,300
7,000
5,200
3,600
2,250
1,200
500
180
30
15,000
13,000
10,000
8,400
5,100
2,800
1,650
600
200