WITZENMANN

      Experienced Team of Engineers in Manufacturing, Quality & Inspection, Procurement, Design & Engineering and Sales. Average experience of the Team 15+ years All Engineers trained at Witzenmann Academy,Pforzheim, Germany Advanced Machineries & Systems for manufacturing of Expansion Joints.
Orders for supply of more than 800 Expansion Joints within a year of commencing Supplied more than 17000+ Expansion Joints for Engine Applications and 1800+ Expansion Joints for Industry Applications.

Expansion Joints

Range

Pressure : As high as 200 Bar (g) from FV
Temperature : As high as 1200 oC from Cryogenic
Size : As large as Dia 5000

Material Grades

Bellows : Stainless Steels – Austenitic, Super
Austenitic, Duplex & Super Duplex; and High
Nickel Alloys – Alloy 400, 600, 625, 625 LCF, 800,
800H, 800HT, 825, C276
Attachments : Carbon Steel, Low Alloy Steel, Stainless Steels and High Nickel Alloys

    Special Designs / Features

    • Externally Pressurised

    • Jacketed

    Additional Features 

    • Slotted Hinges

    • Pantographs

    • Control Rod Units

    • Purge Connections

    • Inner Ply Leak Detectio

    Types of Bellows

    Un Reinforced

    • Single Ply

    • Multi Ply

    • 2 – Ply Testable

    Reinforced

    • Single Ply

    • Multi Ply

    • 2 – Ply Testable

    Types of Expansion Joints

    Unrestrained / Untie

    • Single

    • Universal

    Restrained / Tied

    • Single Lateral (with round tie bars)

    • Universal Lateral (with round and flat tie bars)

    • Hinged Angular

    • Gimbal Angular

    • Pressure Balanced, Elbow

    • Pressure Balanced, Inline

    Configurations – Various Types of Expansion Joints

    Product range

    Single United – Flanged Ends

    Single United – Weld Ends

    Single Hinged – Flanged Ends

    Universal Tied – Weld Ends Flat Tie Bars, Two Plane

    INDUSTRY

    Metal bellows

    METAL HOSE- SPECIAL DESIGNS

    Special designs
    ▪ Conectoflex / “Double hose” / for heating or cooling inner medium
    ▪ Hoses for presses / frequent movements
    ▪ Hose assemblies with bended pipes acc. customer request
    ▪ With PTFE liner
    ▪ Etc.

    STRIPWOUND HOSE

    Strip wound hose
    ▪ DN 6 – 300
    ▪ With isolation
    ▪ Protective hoses
    ▪ Special shapes
    ▪ As Inliner
    ▪ Etc.

    VIBRAFLEX HOSE

    Model 1  Bronze hose With coper connection pieces

    • For conventional applications in the area of refrigeration/ air-conditioning technology. Simple and problem-free brazing with copper connection pices

    • DN 8 to DN 50

    Model 2  Stainless steel hose with factory welded copper connection pieces

    • More stability through stainless steel hose

    • Simple brazing into existing copper lines directly at the construction site

    • DN 6 to DN 100

    Model 3 Stainless steel hose with factory welded stainless steel connection pieces

    • The hose features high stability and long servicr life

    • Designed for use with modern cooling agents such as ammonia (MH3)

    • Advantag: simple welding into steel pipelines

    Ultra high-pressure hose DN 10 / DN 6

    Technical features:
    ▪ operation pressure 388 bar
    ▪ test pressure 582 bar
    ▪ bursting pressure > 1164 bar
    ▪ hose type RS 536L92xx
    – optimized high pressure bulk hose
    – double and triple special wire braiding
    ▪ Helium-leaktest 10-8 mbar x l/s

    METAL BELLOWS

    HYDRA Corrugated Bellows

         Corrugated Bellows combine high pressure resistance at low adjusting forces and optimised expansion on all sides The main application areas are valve construction, measuring and control technology aerospace industry, and mechanical and plant engineering. Corrugated bellows are available in single- and mul-ti-ply versions with a large range of dimensions and materials. Avail to 500 bar. Bellows may be welded to customer- specific connecting elements as appropriate in the individual case.

    Details

    • Media-, corrosion- and temperature resistant

    • Pressure resistant and flexible

    • Long service live

    HYDRA Diaphragm Bellows

         Diaphragm Bellows are characterised by their high elasticity. very low spring rates, low hysteresis as well as high reversed bending strength and long servie life. Application areas: mechanical engineering. vacuum technology, aerospace industry, medical technology, special valve construction, sealing element engineering as slip-ring seals in pumps and compressors, and volume compensation body on oil-cooled high-voltage insulator.

    Details 

    • Expansion absorption of up to 80% of the overall length

    • Standard materoal: stainless steel (1.4571)

    • Normal or narrow profile versions available

    • For large motions at small overall space needs

    HYDRA Precision Bellows

         A multi-ply miniature bellows with an intemal diameter of only 3 mm is used as a high-precision dynamic sealing element in piezo injection technology. The delicate component is sufficiently flexible to permit the small rapid motions of the piezo element while keeping it absolutely dry. Used as a pressure accumulator in vehicles with a hybrid motor system. gastight metal bellows enable high brakimg power even when the combustion motor is switched off. Diaphragrn bellows are used in medical technology as implants for drug dosing.

    Details 

    • Design specifically adapted to customer requirements

    • Minimal dimensions feasible

    • Very clean due to clean room production

    • High-throughput mass production

    HYDRA Valve Bellows

        For the strictest requirements concerning pressure resistance, tightness, and axial absorption of motions at high load cycle safety. Optimised valve series’ with reduced design height and made of various stainless steel grades are available, incluing 1.4511, 1.4541, 1.4571, 1.4404, and 1.4306. Versions made of special materials such as Hastelloy, Inconel, Incoloy are available on stok. TUV-qualifed welders and welders and welding procedures, individual qualifications in high-security engineering. and worldwide approvals ensure that even the strictest acceptance requirements can be met.

    Details 

    • ANSI class up to 2,500

    • Pressure resistance up to 600 bar

    • Wall thickness up to 8x 0.50 mm

    HYDRA Bellows Couplings 

          Metal bellows are well-suited for use as permanent flexible couplong elements for applications in mechanical engineering and precision ngineering They enable direct transmission of force without play of starting and operating torques and compnsate for axial, lateral or angular axle offset.

    Details 

    • Maintenance-free and flexible coupling element

    • Torsionally-rigid and flexible to bending at the same time

    • Symmetrical design formlow vibration, high-speed operation

    • Ideal transmission of torque

    • Long service life

    FLEXPERTE  The Design Software

         Special-designed for designers, ”Flexperte” is a PC software for dimensioning and presenting expansion joints, metal bellows, metal hoses, and pipe supports. The menu-based application aids n the calculation and dimensioning of these products.

    Details 

    • Design of bellows applications

    • Preparation of material data sheets

    • Preparation of enquiries

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