Page 162 - GRINNELL Mechanical Products Catalogue

pRESSuRE & DESiGN DATA
Pipe Support
Angular Movement
System movement can be accommodated 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 condition upon pressurisation resulting in the “snaking” of the piping system . Lightweight hangers may not be suitable to prevent the lateral motion .
Pipe Support
Pipe hanger positioning is important when considering pipe “sagging” due to the flexible nature of the piping system . Proper positioning of hangers near the elbow, for example, should be considered .
The use of spring hangers or other methods can be considered to accommodate vibrations . Base supports, pressure thrust anchors, and pipe offsets can be used to direct pipe movement .
The use of rigid couplings can be considered to reduce the movement available with flexible couplings . Consideration of other methods of accommodation of pipe movements may be required .
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Design Data