Quick Start Guide
5
August 2016
Use the following bolt installation procedure:
Note
Carbon steel bolts do not require lubrication and the stainless steel bolts are coated with a
lubricant to ease installation. However, no additional lubricant should be applied when
installing either type of bolt.
1. Finger tighten the bolts.
2. Torque the bolts to the initial torque value using a crossing pattern.
See Tabl e 1 for initial torque value.
3. Torque the bolts to the final torque value using the same crossing pattern.
See Tabl e 1 for final torque value.
4. Verify the flange bolts are protruding through the sensor module bolt holes
before applying pressure.
1.6 O-rings with flange adapters
Table 1. 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
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
designed for its specific flange adapter, as shown below.
Whenever the flanges or adapters are removed, visually inspect the O-rings. Replace them if there are
any signs of damage, such as nicks or cuts. If you replace the O-rings, re-torque the flange bolts and
alignment screws after installation to compensate for seating of the PTFE O-ring.
Flange adapter O-ring location
A. Flange adapter
B. O-ring
C. PTFE-based profile (square)
D. Elastomer profile (round)
B7M
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