Page 397 - Mechanical Products Installation Handbook IH-1000M
P. 397
PRESSURE & DESIGN DATA 389 Angular Movement
Angular Deflection
System movement can be accommo- dated by providing for sufficient offset lengths. Temperature increases/ decreases can further increase this movement.
When systems are anchored with partially deflected joints, the system can move to the fully deflected condi- tion upon pressurization resulting in the “snaking” of the piping system. Light weight hangers may not be suit- able to prevent the lateral motion.
GRINNELL Flexible Couplings are capable of accommodating angular deflection.
Nominal Pipe Size ANSI Inches DN
1-1/4 - 3
32 - 80
4 - 24
100 - 600
Maximum Pipe Deflection Reduction
50% 25%
Deflection
The deflection published is a maximum value. For design purposes the maximum deflection should be reduced to account for field practices as shown.
Refer to Technical Data Sheets G810, G820, and G830 for more information.
