Class b, Class c – Bray 31U User Manual
Page 10
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.
Resilient Seated Butterfly Valves – Seating & Unseating Torques
Torque : 10
Series 32/33, 35/36 Torques (Lb-Ins)
Valve
Size
inches
32, 35 - Max P = 75 psi
33, 36 - Max P = 150 psi
0 psi
25 psi
50 psi
75 psi
0 psi
50 psi
100 psi
150 psi
Class B
General Service
(Imperial)
24
6,700
8,100
9,500
10,900
10,500
15,000
19,500
24,000
26
7,900
9,800
11,700
13,600
12,400
18,400
24,400
30,400
28
9,200
11,600
14,000
16,400
14,200
21,700
29,200
36,700
30
10,400
13,300
16,200
19,100
16,100
25,100
34,100
43,100
32
11,700
15,600
19,400
23,300
18,400
29,700
41,100
52,400
34
13,500
18,500
23,500
28,500
20,950
34,750
48,600
62,400
36
14,300
20,100
25,900
31,700
23,000
39,000
55,000
71,000
40
18,200
26,200
34,100
42,000
24,300
46,300
68,300
90,300
42
20,200
29,200
38,200
47,200
25,000
50,000
75,000
100,000
44
20,800
32,500
44,200
55,800
26,700
56,700
86,700
118,300
48
22,000
39,000
56,000
73,000
30,000
70,000
110,000
150,000
Class C
54
41,500
73,500
105,500
138,000
56,300
131,000
173,000
282,000
60
55,500
98,200
141,000
184,800
75,100
174,500
208,000
376,000
66
115,700
159,400
203,200
247,000
161,500
277,500
393,400
509,400
72
Consult Factory
78
Consult Factory
84
Consult Factory
90
Consult Factory
96
Consult Factory
Series 32/33, 35/36 Torques (N-m)
Valve
Size
mm
32, 35, - Max P = 5 bar
33, 36 - Max P = 10.3 bar
0 bar
1.7 bar
3.4 bar
5.2 bar
0 bar
3.4 bar
7 bar
10.3 bar
Class B
General Service
(Metric)
600
757
915
1,074
1,232
1,187
1,695
2,204
2,712
650
893
1,107
1,322
1,537
1,401
2,079
2,757
3,435
700
1,040
1,311
1,582
1,853
1,605
2,452
3,300
4,147
750
1,175
1,503
1,831
2,158
1,819
2,836
3,853
4,870
800
1,322
1,763
2,192
2,633
2,079
3,356
4,644
5,921
850
1,526
2,091
2,656
3,221
2,367
3,927
5,492
7,051
900
1,616
2,271
2,927
3,582
2,599
4,407
6,215
8,023
1,000
2,057
2,961
3,853
4,746
2,746
5,232
7,718
10,204
1,050
2,283
3,300
4,317
5,334
2,825
5,650
8,475
11,300
1,100
2,350
3,673
4,995
6,305
3,017
6,407
9,797
13,368
1,200
2,486
4,407
6,328
8,249
3,390
7,910
12,430
16,950
Class C
1,400
4,689
8,304
11,920
15,592
6,361
14,801
19,546
31,862
1,500
6,271
11,095
15,931
20,880
8,485
19,716
23,501
42,482
1,650
13,072
18,010
22,959
27,907
18,247
31,353
44,448
57,555
1,800
Consult Factory
2,000
Consult Factory
2,200
Consult Factory
2,250
Consult Factory
2,400
Consult Factory