Flexible Pipes & Bellows
A.k.a. decoupling elements, are designed to absorb vibrations and temperature fluctuations, protecting more expensive parts.
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A.k.a. decoupling elements, are designed to absorb vibrations and temperature fluctuations, protecting more expensive parts.
Dinex flexible pipes and bellows offer maximum flexibility without sacrificing durability.
Developed by Dinex engineers, the D3S offers low leakage and high flexibility, while the D2S+ uses 20% less material.
Our technologies, endorsed by leading OEMs, are widely used for trucks, busses and off-road equipment all over the world.
The primary function of a decoupling element is to absorb the constant vibrations and thermal expansion generated by the engine—protecting costly components like emission systems and sensors from mechanical damage. That’s why these elements are often integrated into the front pipe or connected as standalone units.
There are two main types of decoupling elements, each offering distinct features and performance benefits. It’s important to always replace a damaged unit with the same type, as the system is specifically engineered for that design.
Dinex offers a full range of decoupling elements built on the same proven technologies we supply to OEMs—engineered for durability, performance, and cost-efficiency.
Despite common misconceptions, flex pipes and bellows are not intended to compensate for dimensional deviations. If a pipe cannot be installed in its proper, nominal position, it shouldn’t be forced into place. Misalignment elsewhere in the system may have caused the previous pipe to fail—always inspect surrounding components before installation.
The most versatile option for absorbing movement—but also the least leak-tight. Made by spirally folding a thin metal strip into a flexible structure, it handles axial, bending, and limited torsional motion. Dinex offers multiple design variations, each engineered to balance flexibility and sealing performance.
A thin pipe section formed with bulges that makes it work similarly to a spring. Completely leak-tight and effective at absorbing axial and bending movements, as well as temperature fluctuations.
Our proven Flex & Bellow technologies are built into our standard aftermarket product line. Additionally, we offer multiple universal solutions and repair options to cover a wide range of applications.
