Rosemount 8732C - Flange Bolts; Model 8705

Rosemount Model 8732C Integral Mount Magnetic Flowmeter System
2-12
Flange Bolts
Flowtube sizes and torque values for Class 150 and Class 300 flanges
are listed in Table 2-3. Tighten flange bolts in the incremental sequence
shown in Figure 2-11.
Model 8705 Correct flange bolt tightening is crucial for proper flowtube operation and
life. All bolts must be tightened in the proper sequence to the specified
torque limits. Failure to observe these instructions could result in severe
damage to the flowtube lining and possible flowtube replacement.
Always check for leaks after tightening flange bolts. All flowtubes
require a second torquing 24 hours after initial flange bolt tightening.
TABLE 2-3. Model 8705 Flange Bolt
Torque Specifications.
Torque the flange bolts
in increments according to
the above numerical sequence.
8701-0589A
4-Bolt
8-Bolt
12-Bolt
14-Bolt
20-Bolt
FIGURE 2-11. Model 8705 Flange
Bolt Torquing Sequence.
Nominal
Flowtube
Size (inches)
Flange Bolt Torque
Specifications in Foot-Pounds
Class 150 Flange Class 300 Flange
½
1
1½
2
3
4
6
8
10
12
14
16
18
20
24
30
36
10
10
17
25
45
35
60
80
70
80
100
90
125
125
150
150
200
10
10
22
17
35
50
65
60
65
80
—
—
—
—
—
—
—