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AXIAL COMPRESSION
RESULTANT LATERAL
MINIMUM SETBACK
TYPE
ACTIVE
LENGTH
AXIAL
EXTENSION
OPERATING
EXCURSION OPERATING OPERATING
EXCURSION
FLANGED
BELT
BELT STYLE ELASTOMERIC EXPANSION JOINTS
6” (150mm)
1” (25mm)
2” (50mm)
1” (25mm)
1” (25mm)
2” (50mm)
2-1/2 (64mm)
6” (152mm)
300-LT
9” (230mm)
2-1/4” (57mm)
4-1/4” (108mm)
1” (25mm)
2-1/4” (57mm) 3-3/4” (96mm)
3-1/2 (89mm)
6” (152mm)
400-LT
12” (305mm)
3-1/4” (83mm)
6” (152mm)
1” (25mm)
3-1/4” (83mm)
5” (127mm)
4-1/2 (114mm)
6” (152mm)
16” (405mm)
5” (127mm)
8-1/2” (216mm)
1” (25mm)
5” (127mm)
7” (178mm)
5-1/2 (140mm)
8” (203mm)
FLANGED ELASTOMERIC EXPANSION JOINTS
6” (150mm)
1” (25mm)
2” (50mm)
1” (25mm)
1” (25mm)
2” (50mm)
2-1/2 (64mm)
6” (152mm)
300-LT
9” (230mm)
2-1/4” (57mm)
4-1/4” (108mm)
1” (25mm)
2-1/4” (57mm) 3-3/4” (96mm)
3-1/2 (89mm)
6” (152mm)
400-LT
12” (305mm)
3-1/4” (83mm)
6” (152mm)
1” (25mm)
3-1/4” (83mm)
5” (127mm)
4-1/2 (114mm)
6” (152mm)
16” (405mm)
5” (127mm)
8-1/2” (216mm)
1” (25mm)
5” (127mm)
7” (178mm)
5-1/2 (140mm)
8” (203mm)
HIGH TEMPERATURE COMPOSITE EXPANSION JOINTS
500-HT
6” (150mm)
1” (25mm)
CONTACT HOLZ
1” (25mm)
CONTACT HOLZ
1/2” (13mm)
6” (152mm)
600-HT
9” (230mm)
2” (50mm)
CONTACT HOLZ
1” (25mm)
CONTACT HOLZ
1” (25mm)
6” (152mm)
700-HT, 800-HT
12” (305mm)
3” (75mm)
CONTACT HOLZ
1” (25mm)
CONTACT HOLZ 1-1/2” (38mm)
6” (152mm)
1000-HT, 1200-HTG
16” (405mm)
4” (100mm)
CONTACT HOLZ
1” (25mm)
CONTACT HOLZ
2” (50mm)
8” (203mm)
CONTACT HOLZ
Thermal growth, seismic and wind loading all contribute to the
need for expansion joints. Holz engineers design for a variety
of scenarios which often include axial, lateral, angular and
torsional movements concurrently. System design can often
be altered to reduce the number of expansion joints within the
ducting and still allow for all design and excursion movements
expected. The below illustrations show movement specifics
encountered in air/gas handling equipment.
Types of Movement
Axial Compression -
The dimensional shortening
of the expansion joint face-to-face gap parallel to its
longitudinal axis.
Axial Extension -
The dimensional lengthening of
the expansion joint face-to-face gap parallel to its
longitudinal axis.
Lateral -
The dimensional displacement of the inlet
and the outlet flanges of the expansion joint
perpendicular to its longitudinal axis.
Torsional Rotation -
The twisting of one end of the
expansion joint with respect to the other end about
its longitudinal axis.
Angular Rotation -
That movement which occurs
when one flange of the expansion joint is moved to
an out-of-parallel position with the opposite flange.
Vibration -
The rapid, small movements, back and
forth hat can occur in any single plane or multi-planes.
MOVEMENT CAPABILITIES
Axial
Angular
Torsional
Lateral