McCANNALOK CRYOGENIC VALVE
Installation, Operation and Maintenance Manual
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contained herein shall not be copied, transferred, conveyed, or displayed in any manner that would
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17 of 18
McCANNALOK CRYOGENIC VALVE
Installation, Operation and Maintenance Manual
Table 4:
GLAND RETAINER NUT AND SEAT RETAINER
SCREW TORQUES (Lb-in)
Valve Size
Gland Nut
Seat Retainer Screws
NPS
150
300
150
300
3
60
60
100
100
4
60
60
175
175
6
80
120
100
175
8
80
140
175
175
10
110
190
175
300
12
130
220
300
300
Table 6:
LOCATING PLUG AND MOUNTING BRACKET CAP
SCREW TORQUE (Lb-in)
Valve Size
Locating Plug Mounting Bracket Cap Screws
NPS
150 & 300
150
300
3
2520
175
175
4
2520
175
175
6
2700
300
300
8
3000
300
756
10
4200
756
756
12
4200
756
756
Table 4:
GLAND RETAINER NUT AND SEAT RETAINER
SCREW TORQUES (Nm)
Valve Size
Gland Nut
Seat Retainer Screws
DN
150
300
150
300
80
7
7
11
11
100
7
7
20
20
150
9
14
11
20
200
9
16
20
20
250
12
21
20
34
300
15
25
34
34
Table 6:
LOCATING PLUG AND MOUNTING BRACKET CAP
SCREW TORQUE (Nm)
Valve Size
Locating Plug Mounting Bracket Cap Screws
DN
150 & 300
150
300
80
285
20
20
100
285
20
20
150
305
34
34
200
339
34
85
250
475
85
85
300
475
85
85
Table 5:
DRILL SIZE TO REMOVE TACK WELD
(inches)
Valve Size
Class
NPS
150
300
3
.234
15/64
.234
15/64
4
.234
15/64
.234
15/64
6
.234
15/64
.234
15/64
8
.234
15/64
.234
15/64
10
.234
15/64
.234
15/64
12
.234
15/64
.234
15/64
Table 5:
DRILL SIZE TO REMOVE TACK WELD
(mm)
Valve Size
Class
DN
150
300
80
6
6
100
6
6
150
6
6
200
6
6
250
6
6
300
6
6
