Page 138 - GRINNELL Mechanical Grooved Piping Products EMEA
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Grooved Couplings
Pressure and Design Data
Pipe Support
Tech Data Sheets: G810, G820, G830
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 pressurization 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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