Expansion Joint
KUMTEK has been involved in the design,
manufacturing, and installation of high
quality, non-metallic expansion joints
kumtek offers a complete range of single
and multiple layers, fabric and fluoro-
elastomer (Viton or Fluorel) type
constructed from best and world-wide
recognized materials to overcome varied
combination of duct movement, corrosion
and particles. Up to year 2014, over 10,000 joints have been installed in power
plant, petroleum, petro-chemical, paper,
steel, incineration, semi-conductor, and
Chemical industries and gained reputation
For high quality, durability and economy. |
↑Base fabrics used
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| Product Applications Range |
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Temperature: ambient to 1000°C
Flow medium: air to corrosive gas
Pressure: -30000 to 30000 Pa
Axial movement: (% of active length)
Compression --50%
Extension –10 to 20%
Lateral –5 to 15%
Above movement capabilities are standards with us.
The joints can be designed to meet specific demands. |
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↑Hot Air Duct Expansion Joint
↑Furnace Outlet, 850°C
↑CBF-Flex
↑Fluo-Flex
 |
| Basic Configuration of Connection |
| There are basically 4 types of connection
between Kumtek Expansion joints and the
duct/pipe line. The choice of the connection are
usually depends on the pipe/duct designs and
on the operation conditions. Kumtek can
accommodate all connection requirements and
recommend the most suitable method for best
cost justified selection. Kumtek supply scope
covers not only the joints but also the
gasketing materials and metal parts
including, back-up bars, sleeve liners, bolts
nuts, duct flanges as well as the fabrication
and installation. |
| Expansion Joint Styles |
Based on application conditions, Kumtek offer
2 categories of Fabrics-type joints. The F series
are for corrosive flow medium and the A
series for clean air. Each series consists of 5
different styles for different service temperature
up to 1000°C. Kumtek also fabricates highest
quality fluoro-elastomer joints made of Viton
B or Fluorel, C-cure system and 100% to FSA
Standards.
F Series |
A Series |
Service Temperature °C |
F200 (Fluoro-elastomer) |
|
200 |
F250 |
A250 |
250 |
F350 |
A350 |
350 |
F500 |
A500 |
500 |
F800 |
A800 |
800 |
F1000 |
A1000 |
1000 |
|
In addition to above standard types, Kumtek can also design, fabricate to specific demands for various different application
conditions. Kumtek has the access to as well as long term Kumtek relationship with most of world-wide
recognized industrial fabrics and insulation materials manufacturers. All joints supplied
have all been proven by track records to be high-quality and most cost effective. |
| The Corrosion Barrier Layer |
 For duct/pipe with aggressive corrosion flow medium and most severe applications, Kumtek
adopts the CBF as the corrosion barrier layer.
The CBF film laminated on CBF-Flex
had been awarded both 「DuPont Plunkett」
and 「Chemical Process's Vaaler Award」 for
its outstanding structural strength and stress
cracking resistance among PTFE materials.
CBF has been considered by the industries as
the best corrosion resistance liner for expansion
Joints. With CBF film built in Kumtek expansion
Joints, you can expect:.
*100% impermeability to corrosive gas
*much longer service life
*resist virtually all corrosive chemicals(PH 0-14)
For normal corrosive applications,
Fluo-Flex fabrics are recommended as the
corrosion barrier for economic reasons. The
Fluo-Flex series are the standard fabrics
applied by many expansion joints makers
and will also Offer you the desired
impermeability and chemical resistance as
CBF-Flex.
|
| Insulation Layer and Fly Ash Pillow |
 The purpose of the Insulation and Fly Ash
Pillow are :
*Protect the joint from being damaged by fly
Ash
*Protect joint layer vulnerable to high temp.
*Reduce heat loss through joint
*Noise reduction
In Kumtek, the insulation and fly ash pillow are
designed and manufactured to meet above
requirements. All materials used including the outer
jacketing (ie. Glass cloth or steel mesh) are all
proven to be with good resistance to the flow
medium and to the high temperature through
computer thermal analysis and simulation tests to
ensure their fulfillment of above objectives.
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| ePTFE Joint Sealant for Corrosive Duct |
Made of Expanded PTFE, Texseal Joint Sealant
are soft, pliable, and compressible offering you
the best sealing effects for corrosive gas duct. The
adhesive backing make the installation very easy. |
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