Page 54 - GarlockFluidSealing2010

B-22
Types of Pipe Movements
Axial Compression
¦ Longitudinal movement shortens face-to-face di-
mension along axis of expansion joint or fexible
coupling
¦ Pipe fanges remain perpendicular to axis
Axial Elongation
¦ Longitudinal movement lengthens face-to-face di-
mension along axis of expansion joint or fexible
coupling
¦ Pipe fanges remain perpendicular to axis
Torsional Movement
¦ Rotation of one fange with stationary counterpart
¦ Simultaneous rotation of both fanges in opposing
motion
Lateral/Transverse Movement
¦Offset movement of one or both pipe fanges
¦Both fanges remain parallel to each other while
forming angle to axis of joint
Angular Movement
¦Defection or rotation of one or both fanges
¦Forms angle with axis of expansion joint or fex-
ible coupling
Vibration
¦Oscillating movement around axis of expansion
joint or fexible coupling
¦Pipe fanges remain parallel with each other
¦Flanges remain perpendicular to axis
¦Mechanical vibration in
steel piping system
reduced with installation
of pipe connectors or
expansion joints