Quick Start Guide
7
September 2016
2. Finger-tighten the bolts.
3. Torque the bolts to the initial torque value using a crossing pattern. See
Table 1
for initial torque value.
4. Torque the bolts to the final torque value using the same crossing pattern. See
Table 1
for final torque value.
5. Verify the flange bolts are protruding through the sensor module before
applying pressure (see
Figure 5
).
Table 1. Torque Values for Flange and Flange Adapter Bolts
Figure 5. Proper Bolt Installation
A. Bolt
B. Sensor module
2.6 O-rings with flange adapters
Failure to install proper flange adapter O-rings may cause process leaks, which can result in death or serious
injury. Only use the O-ring that is designed for its specific flange adapter.
Whenever the flange or adapters are removed, visually inspect the O-rings. Replace them if there are any signs
of damage, such as nicks or cuts. If the O-rings are replaced, re-torque the flange bolts and alignment screws
after installation to compensate for seating of the O-rings.
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
B7M
316
316
316
SW
316
STM
316
R
B8M
A
B
A
B
C
D
A. Flange adapter
B. O-ring
C. PTFE based profile is square
D. Elastomer profile is round
Summary of Contents for 4088A MultiVariable
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