Page 190 - Tyco-Grooved-Fire-Protection-Products-Installation-Handbook

188 SYSTEM DESIGN
Grinnell Flexible Couplings provide for restrained joints and allow for
deflection to aid where the pipe or equipment is misaligned.
Note that flexible couplings will not accommodate both full maximum linear movement and the maximum available angular deflection concur- rently at the same joint.
Misalignment and Deflection 1 of 2
Design Deflection for Roll Grooved Pipe1
Nominal Pipe Size
Figure 705
ANSI Inches
DN
O. D. Inches / (mm)
1-1/4
32
1.660 (42,4)
1.08°
1-1/2
40
1.900 (48,3)
0.94°
2
50
2.375 (60,3)
0.75°
2-1/2
65
2.875 (73,0)
0.62°
—
65
3.000 (76,1)
0.60°
3
80
3.500 (88,9)
0.51°
4
100
4.500 (114,3)
1.19°
5
125
5.563 (141,3)
0.97°
—
150
6.500 (165,1)
0.83°
6
150
6.625 (168,3)
0.81°
8
200
8.625 (219,1)
0.63°
10
250
10.750 (273,1)
0.50
12
300
12.750 (323,4)
0.42°
1. Deflection values are for roll grooved pipe and incorporate design reduc- tions as shown on page 127.