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[
EJ GUIDE ]
Torsional
Deflection
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Torsion refers to twisting
one end of the bellows with respect to the other end, about the
bellows centerline. Expansion joints are not normally expected to
accept torsional deflection, since the bellows is essentially
inflexible in this direction. The piping designer should
carefully provide the system with restraints so that the
expansion joint is not expected to accept TORSIONAL DEFLECTION.
This catalog contains the calculated torsional spring rate for
each expansion joint so that piping designers and analysts can
provide the proper inputs for piping flexibility computer
programs. If it is not possible or economically practical to
relieve the expansion joint of excessive torsional loading, then
PT&P's designers can provide anti-torsion features to the
expansion joints which prevent these loads from damaging the
bellows elements.
EJ Guide |
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= Featured Product =
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+ View larger images
Go to featured
product archives
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U.S. Bellows, Inc. Designed and Fabricated 50
Universal Expansion Joints for an Air Force Base in New Mexico
(Ref#91376-A1, EA) 11/14/2007
U.S. Bellows, Inc. fabricated 50 expansion joints from 304L
stainless steel. The expansion joints were 6" and 8" sizes. The 6"
expansion joints are 24" face to face and the 8" expansion joints
are 26" face to face. All of the expansion joints are fabricated
with liners that are also made with 304L stainless steel. The design
temperature was 200°F and the design pressure was 200 PSIG. The
expansion joints were dye-penetrant tested and hydro tested at 300
PSIG. U.S. Bellows, Inc. provides 100% customer satisfaction in
terms of quality and delivery.
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FAX: (713) 731-8640