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Raimondi Ball Valves - type HPA - 150# to 1500#
Installation & Maintenance Instructions - Appendix A
Tightening torque for bolts
Bolts material
For standard applications
ASTM A 193 Gr B7
ASTM A 320 Gr L7
Tightening torques (Nm)
Ø screw
min
8
16
10
32
12
55
14
90
16
135
18
180
20
255
22
340
24
440
27
640
30
800
1200
33
1180
1760
36
1520
2270
39
1940
2910
42
2410
3610
45
2990
4480
48
3600
5400
52
4620
6940
56
5780
8670
60
7220
10830
64
9020
13530
68
11060
14380
Tightening torque for bolts with PTFE coating
Bolts material
For standard applications
ASTM A 193 Gr B7 + PTFE coating
ASTM A 320 Gr L7 + PTFE coating
Tightening torques (Nm)
Ø screw
min
8
12
10
24
12
41
14
68
16
102
18
135
20
192
22
255
24
330
27
480
30
600
33
885
1320
36
1140
1705
39
1455
2185
42
1808
2710
45
2243
3360
48
2700
4050
52
3465
5210
56
4335
6500
60
5415
8130
64
6765
10150
68
8295
10785
Emerson reserves the right to change the contents without notice
For NACE MR0175 applications
ASTM A 193 Gr B7m
ASTM A 320 Gr L7m
ASTM A 320 Gr B8m cl2
ASTM A 193 Gr B8m cl2
Tightening torques (Nm)
max
min
24
10
48
30
80
40
130
70
200
100
270
140
380
200
510
250
660
350
960
480
600
800
1140
1450
1920
2350
2700
3460
4330
5410
6760
8290
For NACE MR 0175 applications
ASTM A 193 Gr B7m + PTFE coating
ASTM A 320 Gr L7m + PTFE coating
ASTM A 320 Gr B8m cl2+ PTFE coating
ASTM A193 Gr B8m cl2 + PTFE coating
Tightening torques (Nm)
max
min
18
7,5
36
23
60
30
98
36
150
75
203
105
285
150
383
188
500
263
720
360
900
450
600
885
1090
1440
1770
2030
2600
3250
4060
5070
6220
Note
The torque values are valid only for non-
greased bolting.
max
20
40
60
100
150
200
300
380
520
720
900
1320
1700
2180
2880
3520
4050
5190
6500
8120
10150
12440
Note
The torque values are valid only for non-
greased bolting.
max
11,25
30
45
75
112,5
150
225
285
390
540
675
990
1275
1635
2160
2640
3040
3895
4880
6090
7620
9330
page 6
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