Panametrics BWT System, Installation Manual, Page: 37 / 58

BWT™ System Installation Guide 29
Chapter 3. Acoustic Isolation Installation (FIPA Buffers)
6. You must torque the flange studs in small increments. Divide the appropriate torque by 10 to determine the
number of steps. For example, if the required final torque is 90 ft-lb, the remaining steps would be 20, 30, 40, 50,
60, 70, 80 and 90 ft-lb.
7. Set the torque wrench for the first setting and torque the studs in sequence. Turn each stud a maximum of a
1/8 turn at a time.
8. Repeat Step 7 for each of the incremental torque settings.
9. Check the flange alignment again to ensure that the flanges are parallel to each other. Measure the spacing
between the flanges with the caliper on at least four equally-spaced points. The maximum tolerance is ±0.2 mm
difference between the four measured points. If you cannot achieve a tolerance of ±0.2 mm or less, replace the
gasket with a new gasket, and repeat this entire procedure.
10. Repeat the above steps for the remaining flanges.
Improper Gasket Alignment
Improper Flange
Alignment
Proper Gasket Alignment
Caliper
Proper Flange
Alignment
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