Rubber Bellow Swivel

1. Product Overview​​

Rubber expansion joints (flexible connectors) are vibration-absorbing, pressure-compensating connectors for piping systems, designed to ​​absorb movement, reduce noise, and compensate for misalignment​​. They consist of elastomeric bellows with internal reinforcement and flange/threaded end connections.

​​Key Advantages​​

✔ ​​Vibration Damping​​ – Reduces pipe vibration by up to 95%

✔ ​​Movement Absorption​​ – Compensates for axial, lateral & angular movement

✔ ​​Noise Reduction​​ – Lowers water hammer & system noise

✔ ​​Corrosion Resistance​​ – Immune to electrolytic/galvanic corrosion

✔ ​​Easy Installation​​ – No special tools required

​​2. Construction Types​​

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By Design Type​

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Reinforcement Materials​​

​​Nylon Cord​​ – Standard pressure resistance

​​Steel Wire​​ – High-pressure applications (PN25+)

​​Kevlar®​​ – Extreme burst pressure resistance

​​3. Elastomer Options​

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​​4. Technical Specifications​

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​​5. Industry Applications​

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✔ ​​HVAC Systems​​ – Absorb thermal expansion in chillers

✔ ​​Water Treatment​​ – Compensate for pump vibrations

✔ ​​Marine Engineering​​ – Accommodate hull/pipeline movement

✔ ​​Power Plants​​ – Steam line vibration isolation

✔ ​​Chemical Processing​​ – Corrosion-resistant acid lines

​​6. Selection Guide​

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​​7. Installation Guidelines​

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Pre-Stretch​​ – Extend 50% of max axial movement during installation

​​Alignment​​ – Avoid permanent torsion (>5° twist)

​​Anchoring​​ – Use control rods for pressure thrust applications

​​Avoid​​ – Proximity to heat sources (>10cm from hot pipes)

​​8. Standards Compliance​

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​​ISO 9001​​ – Quality management

​​EN 14931​​ – European rubber joint standard

​​FDA 21 CFR​​ – Food-grade compliance (silicone/EPDM)

​​DVGW​​ – German water industry approval

​​UL Listed​​ – Fire-resistant models

​​9. Why Choose Our Rubber Expansion Joints?​

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✅ ​​Full Movement Compensation​​ – Tested to ​​EJMA​​ standards

✅ ​​Custom Fabrication​​ – Odd sizes, special flanges, linings

✅ ​​Extended Warranties​​ – Up to ​​10 years​​ for standard models

✅ ​​Technical Support​​ – Movement calculation services

​​Request our Vibration Isolation Guide or CAD Models!​