2011

FABRIC EXPANSION JOINT

CATALOGUE
FLYTECH ENGINEERING SDN BHD
1/1/2011
 FABRIC EXPANSION JOINT

What do you have to consider before selecting

PLACE TO INSTALL MOVEMENTS PRESSURE

• Is the place to install

easily accessible? Pressure has important
• Is scaffold required to influence to the design of
install the expansion expansion joint, types, materials
joint? and number of layers. The
• Is a crane or other important pressure values to
equipment required to • Axial compression consider are:
lift the expansion joint
• Positive pressure
in place?
• Negative pressure
• Is the expansion joint
should be supplied as • Pulsations
complete unit or in kit • Pressure surges
form for site assembly? • Design/operating
• Axial elongation pressure

MEDIUM TEMPERATURE

The design and types of In the same way as medium

expansion joint is decided by and pressure, temperature has
the type of medium • Angular offset important affect to the design of
Air expansion joint, types, outer
cover materials, and thickness.
• Clean
• Dust content The important temperature
• Contents of soot or fly values to consider are:
ashes
• Chemical load • Lateral offset • Operating temperature
• Humidity • Design temperature
• Variation in temperature
Liquid
• Design temperature
• Clean • Excursion temperature
• Dust content •
• Chemical load

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 FABRIC EXPANSION JOINT
SLEEVE / BAFFLE
an expansion joint ?
SLEEVE/BAFFLE

Use of sleeve / baffle ensures:

Better flow efficiency

Protection an abrasion

Longer life to an
expansion joint

Fixation of insulation in
expansion joint

DUCT CONNECTIONS CONFIGURATIONS

• Single flow sleeve

welded to duct end
• Belt expansion joint

• Flat type
• Single flow sleeve fitted
with expansion joint
• Flanged expansion joint

• Convex type
• Belt/flanged
expansion joint • Single flow sleeve overlapping
the opposite duct end

• Concave type
• Double-acting flow sleeve

ARRANGEMENT OF DUCT

• Horizontal
• Vertical
• Diagonal • Convoluted type • Floating flow sleeve

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 FABRIC EXPANSION JOINT

FABRIC Expansion Joint

The Fabric Expansion Joints offer a

number of profits:

• They are able to receive

movements in several
directions coincidently
• They are easy to adapt to
MULTI-LAYER existing physical conditions
EXPANSION JOINTS • They need little space to
By combining different materials and considering install
their thermal, chemical and mechanical resistance as well as • They are easy to transport and
their fatigue properties, we certify the best solution both in to install
technical and economical respect. • They have almost no reactive
Basically the design of multi-layer expansion joints forces
consist four groups of materials:

OUTER COVER MATERIALS GAS BARRIER INSULATION MATERIALS

Protect the expansion joint Gas barrier is the actual Protect both the gas barrier
from pressure and temperature sealing element, usually placed and the other expansion joint
and ensure the stability. In most between fabric layers or inte- materials from high tempera-
cases the material is coated or grated in the outer cover. ture of the medium
laminated and may also
function as gas barrier. Stainless
steel wire mesh and steel bands TEMPERATURE-RESISTANT
are further used for give added FABRICS
mechanical protection and Very strong and tempe-
dimension stability. rature resistance fabrics are use
to protect the gas barrier and/
or the insulation materials.

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 FABRIC EXPANSION JOINT

Arise from our modern

production facilities, machinery
and tools; we are able to
manufacture the expansion joints
of almost any form and design,
independent of the size of the
duct
SINGLE-LAYER
We use modern computer
EXPANSION JOINTS
software and method for the
design and construction of the Single-layer expansion joints consist of one material
expansion joints. layer only. According to the application area, the layer is
manufactured from fabrics, elastomers or fluoropolymers
with fabric reinforcement as composite materials.
Single-layer expansion joints offer most tightness
and chemical resistance.

BASIC VERSION OF FABRICEXPANSION JOINT

CLOSED END TYPE

BOLSTER
• For all types of connection
The main purpose of bolster is to: • Complete preassembled units
with all steel components,
• Reduce the temperature to insulation etc.
the expansion joint and • Single and multi-layer design
thermal sensitive layers • Accurate dimensions required
• Protect the expansion joint • Usually supplied with holes
from fly ash punched
• Noise attenuation • Quick installation
• Support the expansion joint • Can be supplied in sections
in case of pulsations in the
and assembled on site
duct
OPEN END TYPE
And there are three forms of
bolster techniques:
• Closed on site
• Integrating in the actual
• Not usually supplied with holes
expansion joint layer
• Quick replacement and/or
• Insulation bolster bag
assembly in case of damage
• Loose insulating materials (repair work)
resting between the
• Idea for stockkeeping as spare
expansion joint and the
parts, in rolls
sleeve/baffle

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 FABRIC EXPANSION JOINT

Townson Standard Range of Fabric Joints:

Flytech has the ability to FS 250 allowable working temperature 250 °c
supply fabric joints custom FS 350 allowable working temperature 350 °c
designed to suit a client's in-
FS 500 allowable working temperature 500 °c
dividual specifications or can
offer a comprehensive range FS 600 allowable working temperature 600 °c
of standard products as F S 1000 allowable working temperature 1000 °c
specified below.

Flytech can provide

fabric joints complete with F = Fabric Multilayered Joint
any associated steelwork for
temperatures up to 1200 S = Silicone coated fabric outer over material
degrees Celsius.
Other available materials
Flytech fabric joints are
available with several T = Fluoroelastic Material
external cover materials
V = FKM Viton or Fluorrel Material
designed to withstand the
most difficult atmospheric E = EPDM
conditions.
Effective length 150 200 250 300 350 400
Flytech fabric joints can Axial compression 38 66 83 100 115 132
be manufactured to any size Axial extension 15 15 20 20 25 25
& transported to site as a
Lateral movement 20 27 33 40 47 53
complete unit or in kit form
for site assembly.

The allowable pressure

rating of multilayered fabric
joints will vary depending on
various parameters. As a
guide for general usage, use
0.15 bars as an allowable
working pressure.

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 FABRIC EXPANSION JOINT

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