Metallic Expansion Joints - Thorburn Flex Inc

THORBURN
FLEXIBLE PIPING SPECIALIST
DUAL-FLEX
HOW TO ORDER FROM THIS CATALOGUE
Nominal Model Style Series Plies Ends Pressure Bellows Ends Liner Spool Cover Access. O.A.L.
size or cons # psi Material Material Material Material Material Material inches
24 DF T A 2P FF 150 B5 E1 L5 S0 C0 T0 34.5
24" I.D.
Dual-Flex
Tied-restrained
Movement Series A or
specify cons i.e. 5C5C
for 5 cons x 5 cons
Blank for 1 ply
or # of plies
Flanged/Flanged
Please refer to pages 50 to 52
for specifications
For material codes, please see page 12
For movement specifications for Model DFP,
please see Single-Flex pages 36 to 43
WARNING
Liners are mandatory if flow velocities exceed
the following values:
Air, steam and other gases
1) Up to 6" dia. -4 ft/sec per inch of dia.
2) Above 6" dia. -25 ft/sec
Water and other liquids
1) Up to 6" dia. -1-2/3 ft/sec. per inch of dia.
2) Over 6" dia. -10 ft/sec.
150 psi
Bellows 321SS
Ends 304SS
Liner 321SS
Spool
Accessories
Carbon Steel
T = Tie rods
Cover
I = Intermediate anchor
Carbon Steel
H
G
= Hinge support
= Gimbal support
Accessories i.e. Tie
rod plates Carbon Steel
O.A.L. 34.5
STANDARD MATERIALS
(unless specified otherwise)
Bellows: ASTM A240T321 (B5)
Flanges: Carbon steel A105 or Plate A36 or 44W (customer should specify
actual flanges required, i.e. drilling, material, type) (E0)
Weld ends: Carbon steel A53, A106, Plate A36 or 44W (customer should specify
actual weld ends required i.e. schedule, material, thickness, etc.) (E0)
Vitaulic ends: Carbon steel A53, A106, A36, 44W (E0)
Collars: Carbon steel A36/44W (E0)
Liners: ASTM A240T321 (L5)
Covers: Carbon steel A36/44W (C0)
Accessories: Tie rods, Gimbal, hinges: Carbon steel (T0)
OPTIONS
Liner
To specify liners add L as shown to part number and advise of specific movements
to properly size liner. On combination ends specify flow direction.
Cover
To specify covers add C as shown to part number
NOTES
1. Rated cycle life for a standard Dual-
Flex joint is 5000 cycles per EJMA
6th ed. for any one movement
tabulated minimum.
2. To combine axial and lateral
movements, the sum % of each must
not exceed 100%. Refer to pages 50
to 52.
3. To obtain greater movements or cycle
life contact Thorburn.
4. Maximum axial extension movement
is 50% of tabulated axial value.
5. Maximum test pressure: 1-1/2 x rated
working pressure.
6. Catalogue pressure ratings are
based upon a design temperature
range of -20ºF to 800ºF. Actual
operating temperature should always
be specified.
7. For higher pressure temperature,
movement and cycle ratings with your
application, contact Thorburn.
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