Comflex Gas Turbine expansion joints - James Walker

Comflex ® Gas Turbine Expansion Joints
• Highly reliable
• Proven products
• Comprehensive
customer service
• Extended guarantees
• Advanced technology
High Performance Expansion Joint Technology

Comflex ® Gas Turbine Expansion Joints
Introduction
Gas turbine expansion joints are designed to accommodate
thermal movements and vibration without imposing any loads
on the connected components.
This is achieved by the use of a flexible element capable of
withstanding the high temperature and pressure fluctuations
encountered, yet able to be compressed or stretched without
allowing the gas to escape.
Because expansion joints are critical components, with any
failure leading to downtime of the plant, it is essential to choose
components of the highest quality and reliability.
James Walker Group
The James Walker Group — of which James Walker Townson
is a member — is a global manufacturing group. It has over 50
production, engineering, distribution and customer support
sites across Europe, Australasia, Asia Pacific, Africa and the
Americas.
A close-knit network of Group companies and official
distributors provides products and services to customers in well
over 100 countries.
Comflex ® gas turbine expansion joints offer outstanding
reliability, with extended guarantees, coupled with unsurpassed
customer service. They are available in a wide range of
configurations to suit all applications, no matter how
demanding.
James Walker Townson
James Walker Townson is one of Europe’s leading specialists
in the design, manufacture and installation of flexible expansion
joints and bellows.
Formed in 2003 by the merger of Townson Limited and the
Bellows Division of James Walker & Co Ltd, the company
embraces their finest features for the benefit of industry
worldwide:
• Unsurpassed customer service
• Expert on-site technical advice
• Renowned quality
• Comprehensive manufacturing capability
• Latest advances in materials technology.
The company is also a member of the European Sealing
Association.
Reference lists of installed applications highlighting the
company’s experience with the most difficult applications are
available on request.
To order or get further details, call your local contact shown on rear cover or listed at www.jameswalker.biz

Hot to hot configuration
Hot to cold configuration
Used when the ducting is externally insulated. This basic gas
turbine configuration will accommodate both axial and lateral
movements. The flexible element is designed to withstand the
full gas temperature even though the full cavity insulation pillow
offers additional thermal protection. Ideal configuration for small
size applications or when the system is being run continually.
Cold to cold configuration
A combination of the hot and cold configurations, this is used
when the design of the ducting insulation changes from being
external to internal. Precautions are taken to prevent the height
of the up-stand on the hot side being of a height that will cause
temperature differentials and cracking.
Hot to cold stepped flange configuration
A configuration that accommodates thermal movements in
internally insulated ductwork.
Usually the movements are small as the ducting and expansion
joint operate at a low design temperature. Additional
mechanical protection is built into the insulation pillow to
prevent material loss as a result of extremely high gas
velocities.
This design is incorporated in large circular ducting systems
that have a high cyclic life requirement. Finite element
calculations and on-site experience ensure that the stepped
flange design provides an extended life expectancy. Ideal for
large thermal and cyclic movement requirements on circular
ducting systems.
2
To order or get further details, call your local contact 5
shown on rear cover or listed at www.jameswalker.biz

Double pantograph configuration
Finned configuration
This joint is designed for extreme movement conditions. Both
joints operate simultaneously with minimal stress under the
control of the pantograph mechanism. The insulation pillows
and mounting flanges are also designed for high cyclic life
requirements.
Available in hot to hot, cold to cold and hot to cold
arrangements, this is the ultimate expansion joint assembly for
cyclic life requirements. The frames are designed to run hot to
prevent differential thermal expansion and stress cracking.
The heat is taken away from the flexible element by carefully
designed insulation components in the flange area and cooling
fins.
The flexible element itself accommodates axial and lateral
thermal movements with minimal stress and provides years of
trouble free service.
To order or get further details, call your local contact 6shown on rear cover or listed at www.jameswalker.biz

Unsurpassed customer service
James Walker Townson’s expertise in the manufacture of
flexible expansion joints is matched by its excellent and
comprehensive customer service. Ranging from site surveys
and thermographic reports through to problem solving and
maintenance partnerships, it helps ensure years of trouble free
service for expansion joints.
The company’s turnkey installation package starts with a site
survey to assess existing joints, followed by a full technical
report on their condition and the reasons for any existing
problems. Incorrect installation of joints is commonly the cause
of premature failure, and is often difficult to detect once the
joint has been in service for some time.
Services offered
• Site surveys
• Thermographic reports
• Local fitters
• Turnkey installation package
• Free consultancy
• Problem solving
• Reduced installation times
• Maintenance partnerships
• Total responsibility for ALL expansion joints.
After designing an optimum solution for future operation,
James Walker Townson will remove your existing joints and
install the new ones. To complete the process, service
inspections will be carried out after the joint has been running
for a number of months.
Technical advice
James Walker Townson gas turbine expansion joints are
individually designed to the customer’s particular application.
A consultation service is provided, offering technical advice and
ensuring the optimum design for the application.
Finite element calculations are used to determine the most
effective configuration for the steel frames that support the
expansion joints.
Special designs can be produced for problem applications.
To order or get further details, call your local contact shown on rear cover or listed at www.jameswalker.biz

James Walker Group companies
James Walker & Co
Customer Support Centre
1 Millennium Gate, Westmere Drive
Crewe, Cheshire CW1 6AY, UK
Tel: +44 (0)1270 536000
Fax: +44 (0)1270 536100
Email: csc@jameswalker.biz
James Walker Australia
Tel: +61 2 9644 9755
Fax: +61 2 9645 2009
Email: jwadmin@jameswalker.com.au
James Walker Benelux
(Belgium)
Tel: +32 3 820 7900
Fax: +32 3 828 5484
Email: sales.jwa.be@jameswalker.biz
(Netherlands)
Tel: +31 (0)186 633111
Fax: +31 (0)186 633110
Email: sales.nl@jameswalker.biz
James Walker China
Tel: +86 215117 5802
Fax: +86 215116 6899
Email: info.cn@jameswalker.biz
James Walker Deutschland
Tel: +49 (0)40 386 0810
Fax: +49 (0)40 389 3230
Eamil: info@jameswalker.de
James Walker France
Tel: +33 (0)437 497480
Fax: +33 (0)437 497483
Email: headoffice.fr@jameswalker.biz
James Walker Iberica
Tel: +34 94 4470099
Fax: +34 94 4471077
Email: iberica@jameswalker.biz
James Walker Ireland
Tel: +353 (0)21 432 3626
Fax: +353 (0)21 432 3623
Email: sales.ie@jameswalker.biz
James Walker Italiana
Tel: +39 02 257 8308
Fax: +39 02 263 00487
Email: jameswalker@jameswalker.it
James Walker Mfg Co (USA)
Tel: +1 708 754 4020
Fax: +1 708 754 4058
Email: helpdesk1@jameswalker.biz
James Walker New Zealand
Tel: +64 (0)9 272 1599
Fax: +64 (0)9 272 3061
Email: sales@jameswalker.co.nz
James Walker Norge
Tel: +47 22 706800
Fax: +47 22 706801
Email: firmapost@jameswalker.no
James Walker Singapore
Tel: +65 6777 9896
Fax: +65 6777 6102
Email: sales@jameswalker.com.sg
James Walker South Africa
Tel: +27 (0)31 205 6251/2/3
Fax: +27 (0)31 205 6266
Email: info.za@jameswalker.biz
Health warning: If PTFE or fluoroelastomer (eg, FKM, FFKM, FEPM) products are heated to elevated temperatures, fumes will be produced which may give
unpleasant effects, if inhaled. Whilst some fumes are emitted below 250°C from fluoroelastomers or below 300°C from PTFE, the effect at these temperatures is
negligible. Care should be taken to avoid contaminating tobacco with particles of PTFE or fluoroelastomer, or with PTFE dispersion, which may remain on hands or
clothing. Material Safety Data Sheets (MSDS) are available on request.
Information in this publication and otherwise supplied to users is based on our general experience and is given in good faith, but because of factors which are
outside our knowledge and control and affect the use of products, no warranty is given or is to be implied with respect to such information. Specifications are subject
to change without notice. Statements of operating limits quoted in this publication are not an indication that these values can be applied simultaneously.
James Walker Townson Ltd
Alexandra Street, Hyde
Cheshire SK14 1DY, UK
Tel: +44 (0)161 367 9278
Fax: +44 (0)161 367 9280
Email: sales.townson.uk@jameswalker.biz
BP4315 407/2m
CPN000091584
Registered Office: James Walker Townson, Alexandra Street,Hyde, Cheshire SK14 1DY UK. Reg No. 2432592 England
© James Walker 2007