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How Multi-Passage Rotary Unions Work

How to handle the simultaneous transfer of multiple fluids? KADANT Multi-passage rotary unions are the solution

What is a multi-pass rotary joint?

Multi-passage rotary union are essential components for systems that require the transfer of several fluids or that need several passages sealed independently during rotation. They are designed to ensure that there is no leakage and that pressure is maintained in each individual passage.

In some industrial applications, it is necessary to transfer 2 or more fluids (e.g. air and hydraulic oil) at the same time, which must not come into contact, and these rotary joints are the practical solution to this problem.

How they are made?

A multi-pass rotary union is made of the typical components of a rotary union such as the rotor, guides (or bearings), seals, body and seal. These components are integrated into the housing of the joint, which is designed to provide separate passages for the transfer of various fluids (it is possible to handle up to 12 individual passages in one joint). Moving fluids are separated by seals between the rotor and housing to ensure no leakage.

The benefits of multi-pass rotary union?

An advantage of rotating multi-passage joints is that they can rotate in both directions and the fluid can travel in any direction. The number of passages and the types of fluid that can flow through them are limited only by the size of the rotary joint. The use of separate channels allows the fluid to flow in any combination of directions.

Why choose our rotary joints?

In order to ensure the highest possible performance, our components feature a rotor made with a special heat treatment that guarantees a high strength of the sealing area. The rotor of our multi-passage union is mounted on permanently lubricated ball bearings that ensure smooth, vibration-free operation. The sealing is realised with specially designed seals that guarantee extraordinary durability as well as the possibility of dry running.

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Multipassage rotary union - KADANT

Details

  • Weesp, Netherlands
  • Kadant Johnson Europe B.V.