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June 2014
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Quick Start Guide
Table 2. Torque Values for the Flange and Flange Adapter Bolts
O-rings with flange adapters
Bolt material Head markings Initial torque Final torque
Carbon Steel (CS)
300 in.-lbs. 650 in.-lbs.
Stainless Steel (SST)
150 in.-lbs. 300 in.-lbs.
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.
Figure 4. O-ring Location
A. Flange Adapter
B. O-ring
C. PTFE Based
D. Elastomer
B7M
316
316
316
SW
316
STM
316
R
B8M
A
A
B
B
C
D
D
C
Rosemount 3051S / 3051 / 2051 / 3001 / 3095
Rosemount 1151
00825-0100-4774_RevFA.fm Page 8 Friday, June 6, 2014 2:21 PM