Quick Start Guide
5
June 2016
1.4 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
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 below:
A. Flange adapter
B. O-ring
C. PFTE
D. Elastomer
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.
B7M
316
316
316
SW
316
STM
316
R
B8M
A
A
B
B
C
Rosemount 3051S/3051/2051/3095
Rosemount 1151
D
C
D
4832 Rev CA.fm Page 5 Wednesday, June 22, 2016 2:06 PM