Panametrics BWT System Installation Manual page 23

3. Turn the nut on the second stud 1/8 turn. The second stud should be diametrically opposite the first stud. Proceed
to tighten the remaining studs in the order shown below, or in a similar manner.
4. Turn each nut an additional 1/8 turn. Be sure to TURN THE NUTS IN THE SEQUENCE SHOWN.
5. Use Table 1 below to determine the appropriate final torque for your studs.
Flange Size
and Rating
1 1/2" ANSI 150#
1 1/2" ANSI 300#
1 1/2" ANSI 600#
1 1/2" ANSI 900#
1 1/2" ANSI 1500#
1 1/2" ANSI 150#
1 1/2" ANSI 300#
1 1/2" ANSI 600#
BWT™ System Installation Guide
Turn first nut 1/8 turn.
1
3
4
2
4-Hole Flange
Turn second nut 1/8 turn.
1
3 4
2
4-Hole Flange
Table 1: Final Torques
Stud Rating with
4 Studs/Flange
316 Stainless Steel
B8M,C,1
B8M,C,1
B8M,C,1
B8M,C,1
B8M,C,1
Carbon Steel
B7
B7
B7
Chapter 2. Standard Installation (FTPA Buffers)
1
5
8
4
3
7
6
2
8-Hole Flange
1
5
8
4
3
7 6
2
8-Hole Flange
Stud Diameter (in.)
x Length (in.)
1/2" x 3 1/4"
3/4" x 4 3/4"
3/4" x 4 3/4"
1" x 6 "
1" x 6"
1/2" x 3 1/4"
3/4" x 4 3/4"
3/4" x 4 3/4"
Torque in
ft-lb (N-m)
56 (76)
82 (111)
82 (111)
107 (145)
107 (145)
56 (76)
82 (111)
82 (111)
15