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Quick Installation Guide
00825-0100-4664, Rev BB
January 2013
Rosemount 8712 / 8700 Series
10
If leakage has not stopped at the suggested torque values, the bolts can be tightened in
additional 10% increments until the joint stops leaking, or until the measured torque value
reaches the maximum torque value of the bolts. Practical consideration for the integrity of
the liner often leads the user to distinct torque values to stop leakage due to the unique
combinations of flanges, bolts, gaskets, and sensor liner material.
Check for leaks at the flanges after tightening the bolts. Failure to use the correct tightening
methods can result in severe damage. Sensors require a second tightening 24 hours after
the initial installation. Over time, sensor liner materials may deform under pressure.
Table 1. Suggested Flange Bolt Torque Values for Rosemount 8705 and 8707 High-Signal Sensors
Figure 7. Flange Bolt Torquing Sequence
Size
Code
Line Size
PTFE/ETFE/PFA
liners
Polyurethane/Neoprene/Linatex/Adiprene
liner
Class 150
(pound-feet)
Class 300
(pound-feet)
Class 150
(pound-feet)
Class 300
(pound-feet)
005 0.5 inch (15 mm) 8 8 - -
010 1 inch (25 mm) 8 12 - -
015 1.5 inch (40 mm) 13 25 7 18
020 2 inch (50 mm) 19 17 14 11
030 3 inch (80 mm) 34 35 23 23
040 4 inch (100 mm) 26 50 17 32
060 6 inch (150mm) 45 50 30 37
080 8 inch (200 mm) 60 82 42 55
100 10 inch (250 mm) 55 80 40 70
120 12 inch (300 mm) 65 125 55 105
140 14 inch (350 mm) 85 110 70 95
160 16 inch (400 mm) 85 160 65 140
180 18 inch (450 mm) 120 170 95 150
200 20 inch (500 mm) 110 175 90 150
240 24 inch (600 mm) 165 280 140 250
300 30 inch (750 mm) 195 415 165 375
360 36 inch (900 mm) 280 575 245 525
1
5
3
7
8
4
6
2
8-bolt
4664RevBBQIG.fm Page 10 Friday, January 11, 2013 6:13 PM