Manufactured in India : empowered with Danish Engineering

FABRIC EXPANSION JOINTS
& BELLOWS

BEST-IN-CLASS

Fabric Expansion Joints are extremely flexible and can be made from a variety of special woven fabrics coated or laminated with selected elastomers or fluoropolymers. Fabric Expansion Joints, also known as Fabric Bellows are used to insulate, to avoid mechanical loads and to protect against abrasion. They offer advantages for the pipe work designer as they can absorb movements simultaneously in several directions. Further, they have almost no reactive forces and require little space. Fabric Expansion Joints are easy to customise to suit existing operating conditions and are easy to transport and install. Fabric Expansion Joints are mostly installed in systems operating with low pressure and dry media.

In comparison to Metallic Expansion Joints, Fabric Expansion Joints offers almost unlimited flexibility, giving the pipe work designer more options.

Belman Flexibles India produce high quality Fabric Expansion Joints that bring the excellence of “Belman Expansion Joints” in Denmark, which known for its high quality and reliability. Our Fabric Expansion Joints are manufactured in our production facility in India. They are customized for various applications including various project needs by ensuring quality and reliability throughout the production process.

Our highly engineered Fabric Bellow solutions deliver premium quality with assured cost efficiency. We maximize the cost efficiency of Belman Fabric Expansion Joints by combining the finest Danish technology through streamlined production with agile Indian craftsmanship – never compromise on product quality.

Design range & scope of supply within Fabric Expansion Joints

Belman Fabric Expansion Joints can be designed within the range:

Belman_India_Icon_250x250px_Size of components

DIMENSIONS:
All sizes and shapes

Belman_India_Icon_250x250px_High Preasure_1

PRESSURE:
Up to +/-20.000 Pa (+/- 2000 mmWg)
Special constructions are
available on request

TEMPERATURE:
Up to 750°C, minimum
temperature -35°C

MATERIALS:

Flexible parts: Glass fabric, Wool material, PTFE, Silicones, Wire mesh amongst others
Connection ends & Hardware: As per client request

TESTS:

Visual test, dimension check
or as per client specifications.

Belman_India_Icon_250x250px_Design codes

CERTIFICATES:

On request certificates for steel
parts can be supplied.

BELMAN PRODUCT RANGE

Fabric EXPANSION JOINT TYPES

Fabric Expansion Joints designed for use in air systems (AI).

BELMAN-AI
for
air systems

Fabric Expansion Joints designed for chemical systems (CH)

BELMAN-CH
for chemical systems

BELMAN-FG
for flue gas systems

BELMAN-VA
for various auxiliary systems

FABRIC EXPANSION JOINTS

TECHNICAL DESCRIPTION

APPLICATIONS

As Fabric Expansion Joints are customized designs (either closed or as open belt for joining on-site) with bellows designed to solve the movement absorption in the application as well as meet requirements made by the gap in the pipeline.

Fabric Expansion Joints of single-layer design can safely absorb movements caused by thermal expansions in pipelines and duct systems. Accordingly, it has the possibility to design to accommodate the misalignments on request.

Fabric Expansion Joints are applicable for: Chemical industry, Oil & Gas, Power Plant, Pulp & Paper, Steel plants, Process industry, Flue Gas Systems, Boilers & Stacks and many more.

MOVEMENTS

Fabric Expansion Joints absorb large movements within short built-in lengths (due to multi-layer construction). Fabric Expansion Joints Absorb movements in multiple directions simultaneously (several planes). The movements that the Fabric Expansion Joints are capable of accepting can be singular or a combination of:

Axial movement (compression and extension)
Lateral movement
Angular rotation
Torsional rotation

A significant difference between Fabric Expansion Joints and Metallic- or Rubber Expansion Joints is that Fabric Expansion Joint types can readily accept the torsion which is undesirable with Metallic- and Rubber Expansion Joints. Furthermore, in addition to absorbing movements in the system, Fabric Expansion Joints can also absorb vibrations and help to reduce or eliminate noise.

CONNECTION ENDS & HARDWARE

The Belman Fabric Expansion Joint type is delivered as a customized design (either closed or special requirements as open belt for joining on-site) with Bellows designed to solve the movement absorption in the application as well as meet requirements made by the gap in the pipeline. The Belman Fabric Expansion Joints are supplied as standard as a stand-alone Fabric Expansion Joint (with parallel or vertical fixing flange arrangement) that may be supplied with customized connection ends and including hardware, but not limited to:

Complete units (flanged or with welding ends)
With loose flanges
With clamping bands
Special transport fixtures
Flowliners / inner sleeves
Pre-setting construction

INSTALLATION

Belman always supply complete Fabric Expansion Joint solutions for quick and simple installation into the duct or pipework. When necessary, due to transport or installation considerations we can supply Fabric Expansion Joints in segments for later assembly at the jobsite.

ADVANTAGES

Reduced heat loss by low surface temperature
Minimum reaction forces
Excellent movement absorption and flexibility
Noise reduction
High chemical resistance
Higher flow velocity
Can accommodate misalignments and a large amount of lateral offset (special design may be required and needs to be specified at inquiry stage)
Good vibration resistance depending on design and materials

DESIGN STYLES

Fabric Expansion Joints usually supplies as a “belt” or with integral flanges, the preferred arrangement will depend on the conditions of the installation and system temperature. Simple flanged solutions are common for installing against flanges mounted onto the ductwork, an arrangement suitable for low temperature areas.

Belt type

Belt type expansion joint attached directly onto the outside
of the duct using
clamping bands

normally used for:

Low temperatures (up to 300°C)
Low to medium velocity
Low to medium dust load

i.e.: Clean air ducts

Convoluted

Convoluted fabric expansion joints are attached directly onto the outside of the duct using
clamping bands

normally used for:

Large movements
Low velocity
Low dust content
Low temperature

i.e.: Pulp and Paper Industry

vertical flanges

Fabric expansion joints mounted on vertical flanges, The design can be made both with and without sleeve. The sleeve primarily acts to protect the fabric expansion joint from the particles in the flow medium,

typically used in systems with:

Low flow velocity
Low dust content
Low temperature (up to 450°C)

i.e.: Chemical industry (wet and dry)

parallel flanges

Fabric expansion joints
mounted on parallel flanges

typically used in ductwork with:

Medium temperature range (up to 500°C)
Higher flow velocities
Medium dust content in the flow

i.e.: Low temperature flue gas ductwork in conventional power stations

insulation bolster

Fabric expansion joints
mounted on parallel flanges with insulation bolster.

typically used in plants with:

High temperatures (up to 600°C)
High dust content
High flow

i.e.: High temperature flue gas duct systems in conventional power stations

floating sleeves

Fabric expansion joints with floating
sleeve construction. The floating sleeve gives good protection against
dust whilst allowing lateral movement.

typically used in plants with:

Medium to high temperatures (up to 600°C)
Very high dust content
Low to high flow velocities

i.e.: Cement industry

Hot to cold duct

Hot to cold duct transition is often made in combination with a
fabric expansion joint.

The purpose of the hot to cold duct transition is to be able to use a lower grade (and less expensive) duct material,
by incorporating
the insulation internally in the duct.
Temperatures up to 650°C.

i.e.: Gas turbine installations

refractory lined

Fabric expansion joints installed in refractory lined duct systems

typically used in plants with:

Very high temperatures (up to 1200°C)
Low to high dust content
Low to high flow velocity

i.e.: Incineration plants

We deliver globally

Customized
Fabric expansion BELLOWs

Other than the common design styles of Fabric Expansion Joints that are using mostly by many applications, Belman Flexibles India can assist with very special designs such as “picture-frame” units, with pantographic linkage, with pipe penetration seals and other special arrangements including “dog-bone” seals for low-pressure ductwork carrying condensates and fluids. Further details are available on request.

All Fabric Expansion Bellows manufactured by Belman Flexibles India are engineered specifically to suit the client’s project and application requirements. These flexible solutions for Fabric Expansion Joints are developed in accordance with the submitted specifications and in close interaction with the clients, resulting in an optimal balance between performance and cost. Belman Flexibles India, as the wholly owned subsidiary of Belman Expansion Joint from Denmark, possesses extensive experience in engineering, production, and testing of Fabric Expansion Bellows for long-lasting and enhanced safety. We have supplied Fabric Expansion Joints for different applications worldwide and locally, where we have the necessary craftsmanship and expertise to meet the diverse needs of our clients, ensuring reliability and long-term performance.

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QUALITY & TESTS

Belman Flexibles India is the wholly owned subsidiary of Belman, Denmark. The brand “Belman” is known for its high quality products and therefore the quality control is a fundamental part of the Belman Group. All processes during production designed with the coordination of the Belman Head Quarters quality engineers and strictly implement according to Belman Group procedures with the careful inspection by the Belman Flexible India’s quality inspections. All checks and inspections are done according to the strict prevailing Belman Group quality control procedures which is part of the Belman ISO 9001 quality management system approved by DNV.

Belman Group Quality Assurance

BELMAN Group : decades of excellence

from India to worldwide

Belman Flexibles India brings over 30 years of industry experience from the Belman Group, stamped with the quality guarantee that globally recognised.

A matter of trust

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fABRIC EXPANSION JOINTS DOWNLOADS

BROCHURE & DATA SHEETS

LET US DESIGN A CUSTOM SOLUTION FOR YOU

CONTACT US

(+45) 7515 5999

india@belman.com

FABRIC EXPANSION JOINTS & BELLOWS

Design range & scope of supply within Fabric Expansion Joints

FABRIC EXPANSION JOINTS
& BELLOWS