Panametrics BWT System Installation Manual page 22

Chapter 2. Standard Installation (FTPA Buffers)
8.
Tighten the nuts on the studs further by hand to maintain the centering. Visually verify that the buffer is centered
in the lap joint flange. If necessary, adjust the buffer by hand until it is centered.
It is important to torque the studs properly for a good seal. However, do not over-torque them or you will cause an
acoustic short or change the transducer alignment.
Tighten and torque the studs in increments, as described below.
1. Check the flange and buffer alignment again. Make sure the flanges are consistently parallel to each other.
2. Using an adjustable wrench, turn the first nut turn.
14
Flange
End View
Good
Bad
Proper Gasket
Alignment
Bad
Good
BWT™ System Installation Guide