Procedure
1. Finger-tighten the bolts.
2. Torque the bolts to the initial torque value using a crossing
pattern (see Table 2-2 for torque values).
3. Torque the bolts to the final torque value using the same
crossing pattern (see Table 2-2 for torque values).
4. Verify that the flange bolts are protruding through the isolator
plate before applying pressure.
Table 2-2: Torque values for the flange and flange adapter
bolts
Bolt
material
Head markings Initial
torque
Final
torque
Carbon
steel (CS)
300 in-lb 650 in-lb
Stainless
steel (SST)
150 in-lb 300 in-lb
2.6 O-rings with flange adapters
WARNING
Failure to install proper flange adapter O-rings may cause process
leaks, which can result in death or serious injury.
The two flange adapters are distinguished by unique O-ring grooves.
Only use the O-ring that is designed for its specific flange adapter, as
shown in Figure 2-5.
Quick Start Guide February2024
10 Emerson.com/Rosemount
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