With 24 companies in 19 countriesWitzenmann is number 1 in the industry worldwide.

THE GROUP

World leaderWitzenmann is a global group specialising in the design and manufacture of flexible metal elements. Guided by our vision of "managing flexibility", our company has become renowned as a reliable manufacturer and as the innovative development partner of choice within the industry. Today, Witzenmann offers the widest product range worldwide for the most diverse areas of application. This enables us to offer the correct solutions time and time again.

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Witzenmann GmbH Östliche Karl-Friedrich-Str. 13475175 PforzheimPhone +49 7231 581 - 0Fax +49 7231 581 - 820wi@witzenmann.comwww.witzenmann.de

FLEXIBLE METAL ELEMENTS FOR RAIL VEHICLES

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REFERENCES

p ALSTOM Transportp Bombardier Transportationp MAHLE Industrial Thermal Systemsp Liebherr Transportation Systemsp Vossloh Locomotivesp Voith Turbo

FLEXIBLE METAL ELEMENTS FOR RAIL VEHICLES

IRIS - International Railway Industry Standard

DIN EN 15085-2; certification level CL 1

ISO/TS 16949; ISO/TS 14001

EJMA - Expansion Joint Manufacturers Association

Association Euro-Qualiflex

NADCAP - National Aerospace and Defense Contractors Accreditation Program

Global Compact

APPROVALS/CERTIFICATES

The restricted mounting space in the area of the refrigeration systems, for example in the transformer oil cooling circuits, places high demands on the geometrical and technical characteristics of the flexible systems.

REFRIGERATION SYSTEMS

Technical Characteristicsp Compensation of thermal expansion and installation tolerances,

decoupling of vibrationsp Heat and pressure-resistant due to selection of suitable materials

and multi-ply constructionp Resistant to corrosive media or media elements due to selection

of suitable materials

HYDRA® PIPING SYSTEMS

Designsp Pipe with flexible metal bellowsp With and without internal sleevep With and without insulationp With and without braiding, inside and outsidep Design according to customer specifications, preferably with flexible sectionp Connection with flange, V-end connection or according to customer specificationsp Segment and/or bare pipe elbow (up to DN 150) from in-house production optional

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ENGINE AND EXHAUST

HYDRA® EXHAUST EXPANSION ELEMENTS

Designs

p Use of one or more flexible elements, depending on requirements, with and without insulation

p Design according to customer specificationsp Connection parts according to customer specifications

HYDRA® RETURN PIPES

Designsp Design according to customer specifications, preferably with corrugated sectionp Bend either by means of bare pipe elbow or by means of bending in corrugated

sectionp Connection with flange, V-end connection or according to customer specifications,

with and without insulation

Flexible pipe elements are used at the engine to absorb thermal expansion, vibrations and to compensate installation tolerances. Depending on the installation situation, the components can be supplied pre-bent to customer's requirements. This minimises subsequent assembly costs.

Areas of ApplicationIn the exhaust gas area: collecting main, bypass, before and after turbocharger, charge air, in the manifold area, oil return pipes.

Technical Characteristicsp Technically oil and gas-tight p Temperature, pressure and corrosion resistantp Ageing resistantp Compact design for tight installation conditions

HYDRA® EXHAUST GAS COLLECTING MAIN

HYDRA® EXHAUST DECOUPLING ELEMENTS

Designsp Expansion joint with V-end, e.g. with internal sleeves clamped on both sidesp V-end connection as turned part to hold a seal and clamps for internal sleevesp Counterpart according to customer specificationsp Special V-end clamp with profile segments made from solid material for increased

clamping strength in high temperature applications

Designsp Flexible metal bellows/expansion jointp Design according to customer specificationsp Connection parts according to customer specificationsp Use of one or more flexible elements, depending on requirements, with and without

insulation

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HYDRA® SPRINKLER APPLICATIONS

Designsp Annularly corrugated hoses with outer braidingp Design according to customer specificationsp Connectors according to customer specificationsp Available as a complete system including installation components

HYDRA® PROTECTIVE HOSES

Designsp Stripwound hose with interlocked profilep Sealed or unsealed modelsp With or without PVC-covering (liquid-tight)p Available in galvanised steel, stainless steel or brassp Special hoses for glass fibres (made of aluminium)p Connection parts according to customer specificationsp Use of one or more flexible elements, depending on requirements

HYDRA® AIR CONDITIONING UNITS

Designsp Bronze hose with copper connection parts: for conventional applications in the area

of refrigeration/air-conditioning technologyp Stainless steel hose with welded copper connection parts: Advantage: easy to braze

to existing copper pipesp Stainless steel hose with stainless steel connections: Advantage: easy to weld into

steel pipelines

HYDRA® POWER TRANSMISSION (GEARBOXES)

Designsp Annularly corrugated hoses with outer braidingp Design according to customer specificationsp Connection parts according to customer specificationsp Use of one or more flexible elements, depending on requirements

Flexible pipelines and pipe systems are used in a wide range of configurations. They are designed to meet the customer's needs and for use in special applications.

HOSES

Areas of ApplicationCircuits holding liquids (oil, water, air conditioning, braking systems), protective hoses, cable systems etc. Technical Characteristicsp Diffusion resistantp Technically oil and gas-tightp Temperature, pressure, corrosion and ageing-resistant

HYDRA® TRANSFORMERS - OIL CIRCUIT

Designsp Annularly corrugated hoses with outer braidingp Design according to customer specificationsp Connection parts according to customer specificationsp Use of one or more flexible elements, depending on requirements, with and

without insulation

HYDRA® BRAKE SYSTEMS

Designsp Annularly corrugated hoses with outer braidingp Design according to customer specificationsp Connection parts according to customer specificationsp Use of one or more flexible elements, depending on requirements, with and

without insulation