AMOT B - User Maintenance Parts Identification

21
Maintenance
Doc No: OMMB00010 Revision: 7 – Mar 2014
9. Wind manual operator nut and check sliding valve fully closes onto
seat. Return valve to auto position and secure operating nut with
locknut (Item 38). Ensure washer (Item 32) is free.
10. Position gasket and lower housing over upper housing, secure with
nuts and washers (Items 12 & 11). Please note that in some B
valves ‘O’ rings are used in place of gaskets. For nut torque settings
see table 1.
Size Code
O ring
O ring
Gasket
Gasket
Nm
lb ft
Nm
lb ft
1 ½
54
40
N/A
N/A
2
54
40
N/A
N/A
2 ½
80
60
N/A
N/A
3
80
60
N/A
N/A
33
80
60
N/A
N/A
4
54
40
68
50
5
80
60
122
90
6
80
60
122
90
8
80
60
122
90
Table 4 – Tightening torques for housing nuts
7.2.1 User maintenance parts
Table 5 – Number of elements per valve
Size Code
Valve nominal bore
Number
Inches
mm
of elements
1 ½
1.5
40
1
2
2
50
1
2 ½
2.5
65
2
3
3
80
2
33
3
80
3
4
4
100
4
5
5
125
6
6
6
150
9
8
8
200
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