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INSTALLATION MANUAL
EXPANSION JOINTS
LBH INTERNATIONAL A/S Kohaven 9 - P.O. Box 109 DK-5300 Kerteminde Telephone + 45 65 32 46 11 Telefax + 45 65 32 45 11 E-mail [email protected]
STORAGE
LBH expansion joints should be stored under clean and dry
conditions and must be protected against mechanical
damage. Do not unpack an expansion joint until ready for
installation. Protective covers should be left on as long as
possible. Transportation support devices ought not to be
removed until the expansion joint is in position in the
ductwork.
HANDLING
Do not commence installation before all work on the
ducting and flanges has been completed and all anchors and
supports have been established. This to avoid any accidental
damage on the expansion joint due to welding sparks, sharp
objects etc., and to ensure that the expansion joint is not
over-stressed.
LBH expansion joints are manufactured from highly
flexible materials. The durability depends on careful and
correct handling. Sharp corners and folds must be avoided
and care must be taken when lifting expansion joints. It is
recommendable to use a supporting plate or an internal
frame when lifting. Preferably, an expansion joint should be
assembled with backing flanges and, if included in supply,
the internal sleeve, before lifting.
DUCTING FLANGES / TOLERANCES
In case the scope of delivery includes ducting flanges,
backing flanges or other steel parts, check that the measures
are in accordance with drawings and that boltholes are
placed symmetrically on each flange.
Ensure that the building length (F/F) is in accordance with
the tolerances specified by LBH.
IDENTIFICATION LABEL
LBH expansion joints are always to be installed with the
identification label facing outwards.
The optimal durability and efficiency of an expansion joint is determined by a correctly and carefully
accomplished installation. Important : In any matter of doubt, contact the LBH Technical Department.
SM-0397-E1
INSTALLATION MANUAL
FABRIC EXPANSION JOINTS
LBH INTERNATIONAL A/S Kohaven 9 - P.O. Box 109 DK-5300 Kerteminde Telephone + 45 65 32 46 11 Telefax + 45 65 32 45 11 E-mail [email protected]
the expansion joint / ducting flanges and the sleeve, for ab-
sorbtion of the movements specified.
Backing flanges in larger dimensions should be manufac-
expansion joint must be rounded in order to prevent da-
When dimensioning the backing flanges, it is important to
consider the material thickness of the expansion joint in
question. For further information, we refer to LBH form
SM-0385.
The optimal durability and efficiency of an expansion joint is determined by a correctly and carefully
accomplished installation. Important : In any matter of doubt, contact the LBH Technical Department.
INTERNAL SLEEVE
An internal sleeve must be installed if the gas velocity ex-
ceeds 10 metres per second, or if the medium contains a-
brasive particles.
For LBH elastomeric expansion joints, the
INSTALLATION MANUAL
FABRIC EXPANSION JOINTS
use of an inner sleeve may be dispensed with, if the gas ve-
locity is less than 20 metres per second, respectively 25 met-
res per second in combination with a 50 mm “set back”.
Ensure that the inner sleeve is correctly aligned in relation
to the flow, and that there is sufficient distance between
The gasket between the inner sleeve and the duct flange is
to be mounted on the inner side of the bolt line. The gasket
is typically glass rope or ceramic rope. In case of wet ap-
plication or special requirements regarding tightness, a 10x3
mm expanded PTFE sealant is recommendable. (See also
LBH form SM-0400).
BACKING FLANGES
tured in sections. Sharp edges must be rounded off.
For connecting sections it is recommendable to use e.g.
40x1 mm galvanized steel plates as connection between
backing flanges.
The edges of the backing flanges facing the fabric of the
mage. Backing flanges for expansion joints profile II, III
and VI are to be manufactured with countersunk boltho-
les, and must be fitted by means of bolts with countersunk
heads.
SM-0398-E3
LBH INTERNATIONAL A/S Kohaven 9 - P.O. Box 109 DK-5300 Kerteminde Telephone + 45 65 32 46 11 Telefax + 45 65 32 45 11 E-mail [email protected]
BOLTHOLES
LBH expansion joints are either supplied drilled or undrilled.
On site, boltholes can be made in one of the following ways:
� Use a backing flange as a template for marking up the
correct position of the boltholes.
By means of a hardwood - or plastic support, punch
the holes with a hollow punch.
� Alternatively, the boltholes can be drilled. It is then
recommendable to use an air operated drilling
machine. It is important that the drill does not
accidently damage the outer layer of the expansion
joint, in order to prevent the fabric or insulation
material from being wound around the drill. The
flange edge of the expansion joint must be clamped
between the ducting flange and the backing flange
before drilling.
For fastening use screw cramps, which are
successively moved as holes are drilled and bolts are
fastened.
CLAMPING AREA
FABRIC EXPANSION JOINTS
All coated LBH fabric materials undergo a pressure-
/leaktest before being approved for production. For the
majority of applications, adequate sealing is obtained
between the backing flanges and the woven fabric.
However, for maximum pressure applications and in case of
requirements for optimum tightness, it is recommendable to
use sealant in the clamping area and around the boltholes.
Where complete sealing of the clamping area must be
guaranteed, e.g. when the medium contains hazardous
gases, a pressure tested unit can be supplied. If requested, it
can be issued with a test certificate from the LBH
Inspection & Control Department.
The optimal durability and efficiency of an expansion joint is determined by a correctly and carefully
accomplished installation. Important : In any matter of doubt, contact the LBH Technical Department.
INSTALLATION MANUAL
FABRIC EXPANSION JOINTS
SM-0399-E1
LBH INTERNATIONAL A/S Kohaven 9 - P.O. Box 109 DK-5300 Kerteminde Telephone + 45 65 32 46 11 Telefax + 45 65 32 45 11 E-mail [email protected]
FASTENING
The optimal durability and efficiency of an expansion joint is determined by a correctly and carefully
accomplished installation. Important : In any matter of doubt, contact the LBH Technical Department.
INSTALLATION MANUAL
FABRIC EXPANSION JOINTS
EXPANSION JOINTS TYPE HD250, HM250 & HL250
To increase the tightness in the clamping area, a seal of
minimum 10 x 3 mm expanded PTFE sealant should be
applied between the bellow and the duct flange. The
sealing surface must be plane, clean and dry. To complete
the sealing procedure, cross the ends of the sealant.
If the flanges are with bolt holes the sealant must be
Applied to the inner side of the bolt line.
Clamping bolts should be fastened in sequence, and all
bolts should be tightened with the same torque. One or
two days after installation, the bolts are to be checked for
tightness and again when the system has been started up.
For correct torque we refer to LBH form SM-0386.
INSULATION
For some applications, external insulation of the expansi-
on joint can be an advantage, as a means to prevent an ag-
gressive medium from continously dropping below the dew
point, and thereby condensating, with the danger of causing
an acid attack of the expansion joint materials and corrosi-
� on of the metal parts.
However, it is of the utmost importance to note that ex-
pansion joints may only be covered with external insulation
in the low-/medium temperature range and only after appro-
val from the LBH Technical Department. In order to allow
the expansion joint to dissipate heat, insulation of the duct
� work should be installed as shown on fig. � and �.
SM-0400-E4
WASHING OF DUCTWORK
Fabric expansion joints and insulation bolsters can be
damaged by washing water used to clean the ductwork.
Therefore, these parts must be carefully protected before
washing of ducts, internally or externally, is carried out.
LBH INTERNATIONAL A/S Kohaven 9 - P.O. Box 109 DK-5300 Kerteminde Telephone + 45 65 32 46 11 Telefax + 45 65 32 45 11 E-mail [email protected]
�
The optimal durability and efficiency of an expansion joint is determined by a correctly and carefully
accomplished installation. Important : In any matter of doubt, contact the LBH Technical Department.
INSTALLATION MANUAL
FABRIC EXPANSION JOINTS
PROFILE I
LBH expansion joints profile I can be supplied with or
without clamps. For single-ply expansion joints, the clamps
can be sewn into the clamping area, thus forming an integra-
ted part of the expansion joint. Generally, clamps are only
recommended as a means of fastening when the medium
temperature is lower than 400°C, and for circular sizes smal-
ler than 1000 mm in diameter.
PROFILE II, III, VI
LBH expansion joints profile II, III and VI are not recom-
mended for medium temperatures above 525°C. Backing
flanges and other accessories can be supplied if requested.
PROFILE IV, V, VII
LBH expansion joints profile IV, V and VII are often used
in combination with an internal insulation bolster, pos. 10,
in order to improve the sound attenuation and/or as a pro-
tection against accumulation of particles between the inner
sleeve and the expansion joint. Backing flanges and other ac-
cessories can be supplied if requested
INSULATION BOLSTER
An internal insulation bolster can be installed with or with-
out the facility of fastening the bolster between flanges. If
the bolster is delivered without flange edges, it is recom-
mendable that the bolster is fastened with pins as illustrated.
To obtain maximum securing ability, avoid placing the pins
on a straight line. The pins are to be welded to the inner
sleeve and thereafter stuck through the insulation material
For final fixation use a lock washer. For best result, use a
bolt welding machine for welding of pins, alternatively use
the method shown on fig. �.
SM-0401-E1
LBH INTERNATIONAL A/S Kohaven 9 - P.O. Box 109 DK-5300 Kerteminde Telephone + 45 65 32 46 11 Telefax + 45 65 32 45 11 E-mail [email protected]
�
If requested, our staff of supervisors and fitters stand at your disposal
The optimal durability and efficiency of an expansion joint is determined by a correctly and carefully
accomplished installation. Important : In any matter of doubt, contact the LBH Technical Department.
INSTALLATION MANUAL
FABRIC EXPANSION JOINTS
LBH EXPANSION JOINT UNITS
LBH Expansion Joints can be supplied as pre-assembled
units including shipping straps which ensures correct
installation. Shipping bars must be removed after the unit has
been mounted into the ductwork.
Great care must be taken when removing shipping bars. If a
welding or burning torch is used always protect the bellows’
area from burn splatter with a flame retardant cloth or other
shielding material.
Pre-assembled units must be supported during installation
and should be installed with appropriate lifting equipment. It
must be lifted by the lifting points and never by their
shipping straps. Normally lifting points and lifting devices
are the responsibility of the customers site personal. If
separately agreed this is being including the supply.
OPEN ENDED DESIGN
An LBH expansion joint delivered open ended is to be
wrapped around the duct and fastened temporarily to the
ducting flanges with clamps or screw cramps. Ensure that the
identification label is facing outwards. For rectangular
profiles IV and V, corners will be marked on the expansion
joint. For horizontal ducting, the joint should be made on the
top of the duct, see fig. �.
The bolts are to be inserted in sequence from the middle of
the side opposite the joint, working alternately to the left and
the right of this position. All the bolts are to be inserted, exept
for an area of approximately 500-800 mm, which is kept open
for the joining of the two ends of the expansion joint.
No bolts should be tightened before the joint has been made
and all the bolts have been inserted.
The ends of the expansion joint are to be joined in accordance
with the instructions given in the LBH JOINING MANUAL,
which is supplied with each open design expansion joint.
Each ply has to be joined in turn, starting from the inside.
Boltholes are to be punched or drilled in accordance with
LBH form SM-0399. Once all the bolts are inserted, repeat
tightening from the side opposite the joint.
Shipping straps
SM-0402-E3
LBH INTERNATIONAL A/S Kohaven 9 - P.O. Box 109 DK-5300 Kerteminde Telephone + 45 65 32 46 11 Telefax + 45 65 32 45 11 E-mail [email protected]
LBH ELASTOMERIC EXPANSION JOINTS
INSPECTION & INSTALLATION PROCEDURE
(NPG, EPDM, FKM®)
1.0 INSPECTION
The optimal durability and efficiency of an expansion joint is determined by a correctly and carefully
accomplished installation. Important : In any matter of doubt, contact the LBH Technical Department.
1.2.1 Flange sealing surfaces should be inspected for flatness. In-
spection should be made by placing a 1 meter long straight
edge on the sealing surface. No gaps larger than 1 mm must
be found between the straight edge and flange.
1.2.2 Contact the LBH Technical Department if there is any doubt
regarding the suitability of the flange sealing surface.
INSTALLATION MANUAL
FABRIC EXPANSION JOINTS
1.1 Clean expansion joint flanges of rust, scale, media deposits,
and all other foreign matter. The use of powered cleaning e-
quipment such as steam, rotary wire brush or other such de-
vices may be used as deemed necessary by the contractor to
accomplish cleaning of the flanges. Care should be exercised
during cleaning to avoid damaging the sealing surface of the
flanges.
1.2 Inspect the sealing surface of the flanges for damage that
would effect expansion joint sealing. Such damage would
be notches created by erosion or corrosion, scratches, gouges,
grinding marks, welding spatter and any other possible source
of leakage.
The sealing surfaces should also be inspected for any irregula-
rities, which could cause an unsufficient seal between the ex-
pansion joint material and flanges. Such irregularities may be
an unground weld, bolt holes located of center, thereby redu-
cing the effective sealing surface etc.
2.0 INSTALLATION
2.1 Inspect the crate containing the expansion joint for any dama-
ge caused during transport. Carefully unpack the expansion
joint and check for any shipping damage.
SM-0372-E3
LBH INTERNATIONAL A/S Kohaven 9 - P.O. Box 109 DK-5300 Kerteminde Telephone + 45 65 32 46 11 Telefax + 45 65 32 45 11 E-mail [email protected]
2.2 Elastomeric expansion joints can be installed without a
sealing gasket, if point 1.2.1 is fulfilled. However, to
optimize tightness a fluid sealing is recommended.
2.3 Carefully position the expansion joint onto the flange, lining
up the bolt holes. For rectangular expansion joints supplied
as a belt type, the corners are indicated and should be
positioned as such.
2.4 Sliding of the expansion joint against the flange should be
avoided in order to prevent dislocation of the sealing gasket
and damage to the surface of the expansion joint.
2.5 Attach all backing flanges using bolts, nuts and washers as
described on the certified assembly drawings. Fasteners
should be made hand tight only. Always start from the top
flange.
2.6 Tighten bolts acc. to LBH formular SM-0386, starting at the
center of the backing flange and moving towards the ends
while altering from side to side.
2.7 It is recommendable that elastomeric expansion joints are
not installed at temperatures below + 10°C. If installation
has to take place at temperatures below this point, contact
the LBH Technical Department for instructions.
2.8 In order to minimize the risk of leaking caused by uneven
surface pressure on the flanges, the use of spring washers
are generally recommended.
3.0 FINAL INSPECTION/REVISION
3.1 Inspect expansion joints for any damage, which may have
occured during installation.
3.2 It is always necessary to retighten the bolts. Check the bolt
torque before system start-up.
3.3 After trial run and at the compulsory revisions, all bolts
have to be fastened in order to remain tight.
The optimal durability and efficiency of an expansion joint is determined by a correctly and carefully
accomplished installation. Important : In any matter of doubt, contact the LBH Technical Department.
INSTALLATION MANUAL
FABRIC EXPANSION JOINTS
SM-0373-E4
LBH INTERNATIONAL A/S Kohaven 9 - P.O. Box 109 DK-5300 Kerteminde Telephone + 45 65 32 46 11 Telefax + 45 65 32 45 11 E-mail [email protected]
4.0 DISPOSAL OF EXPANSION JOINTS AND
INSULATION BOLSTERS.
Non combustible
Combustible
Recyclable
Fabric Expansion Joints
X
Insulation Bolster
X
Insulation Material
X
Rubber Expansion Joints
(X)
X
Viton Expansion Joints
X
Polyurethane Expansion Joints
X
Wiremesh and steel
X
Non combustible/ combustible material are to be delivered at a controlled refuse dump.
REFUSE DUMPREFUSE DUMPREFUSE DUMPREFUSE DUMP
INSTALLATION MANUAL
FABRIC EXPANSION JOINTS
SM-2189-E3
LBH INTERNATIONAL A/S Kohaven 9 - P.O. Box 109 DK-5300 Kerteminde Telephone + 45 65 32 46 11 Telefax + 45 65 32 45 11 E-mail [email protected]
MAINTENANCE CHART
LBH FABRIC EXPANSION JOINTS
Pos.No.
Activity/Check
After
24 hrs.
Year-
ly
Re-
place
�
Date
Sign
�
Date
Sign
�
Retighten bolts �
�
Check bolts
�
�
Surface colour changes
�
�
Scratches/damage �
�
�
Signs of acid attack
�
�
Folds on outer-layer �
�
�
All fabric joinings
�
�
General visual check
�
�
Corrosion
�
�
Corrosion
�
�
Sealing capability
�
�
Corrosion
�
�
Remove dust, etc.
�
� Especially in the flange area
� Due to excessive movements
For additional copies of maintenance charts, please contact the LBH Technical Department.
INSTALLATION MANUAL
FABRIC EXPANSION JOINTS
SM-0446-E2
LBH INTERNATIONAL A/S Kohaven 9 - P.O. Box 109 DK-5300 Kerteminde Telephone + 45 65 32 46 11 Telefax + 45 65 32 45 11 E-mail [email protected]
DIMENSION
BACKING FLANGE/
HINTERLEGFLANSCH
BOLT/SCHRAUBE
30x8
M10
40x10
M10
50x10
M12
60x10
M12
60x12
M16
50x12x3 1)
ø 16 x 2,5 2)
M12 3)
TYPE/TYP
LN100
30 Nm
40 Nm
50 Nm
-
-
-
LN200
40 Nm
40 Nm
60 Nm
-
-
-
MN/RN
250
40 Nm
45 Nm
60 Nm
-
-
-
LN/MN/RN/HD/HM/H
300
40 Nm
45 Nm
60 Nm
-
-
-
LN/MN/RN/HD/HM/HL
400
-
45 Nm
60 Nm
60 Nm
-
-
LN/MN/RN/HD/HM/HL
500
-
45 Nm
60 Nm
60 Nm
90 Nm
-
LN/MN/RN/HD/HM/HL
700
-
-
60 Nm
60 Nm
90 Nm
-
LN/MN/RN/HD/HM/HL
1000
-
-
60 Nm
60 Nm
90 Nm
-
GTX-A ,B ,C
60 Nm
60 Nm
90 Nm
80 Nm
HD250
-
45 Nm
60 Nm
60 Nm
-
-
EPDM
-
45 Nm
60 Nm
60 Nm
90 Nm
-
FKM
-
45 Nm
60 Nm
60 Nm
90 Nm
Bolts: Zinc plated 8.8 MoS2 lubricated / Schrauben: Verzinkt 8.8 MoS2 geschmiert
Bolt pitch: 100-130 mm / Lochabstand: 100-130 mm.
1)
Clamp / Klemmeisen. 2)
Tube / Rohr. 3)
Stud bolt / Schweißschraube.
TORQUE VALUES
ANZUGSDREHMOMENTE
SM-0386-X6