Rotary unions · Multi-passage · High-pressure hydraulic & multi-media

600 Series — multiple independent flow passages in a single rotating union

The 600 Series Multi-Passage Rotary Union features multiple independent flow passages within a single rotating union, enabling the simultaneous transfer of multiple media circuits. Designed for high-pressure industrial applications, it ensures reliable sealing, efficient fluid transfer, and optimum performance in complex rotating machinery.

Up to 250 RPM
Hydraulic oil to 400 bar
1/8″ single to 2″ multiport
Media
Water, air, gas, vacuum & hydraulic oil
Max. speed
250 RPM
Max. pressure
Up to 400 bar (hydraulic)
Size range
1/8″ to 2″ multiport
Multiple circuits, one rotating union

Reliable sealing across complex, multi-media rotating machinery

The 600 Series Multi-Passage Rotary Union features multiple independent flow passages within a single rotating union, enabling the simultaneous transfer of multiple media circuits. Designed for high-pressure industrial applications, it ensures reliable sealing, efficient fluid transfer, and optimum performance in complex rotating machinery.

Key features

Individual flow paths, sealed and supported for continuous duty

The 600 Series combines individually separated flow paths with a sealing and bearing arrangement built for stable, reliable operation across every passage simultaneously.

Multi flow individual path design

Individual flow paths provide reliable separation and transfer of multiple media.

Self supported sealing

Self-supported sealing design provides reliable sealing performance during operation.

Dynamic elastomeric sealing

Dynamic elastomeric sealing provides effective sealing for continuous rotary operation.

Hardened sealing rotor

Hardened sealing rotor provides improved wear resistance and longer service life.

Widely spaced ball bearings

Widely spaced ball bearings help absorb side loads and provide stable operation.

Individual flow paths & bearing support

Separation between circuits, stability under side load

Each passage stays sealed and independent, while widely spaced ball bearings keep the rotor stable under the side loads a multi-passage union experiences.

Independent concentric flow passages, each sealed and separated from the next
  • Individual flow paths keep media fully separated

    Individual flow paths provide reliable separation and transfer of multiple media, so circuits carrying different fluids or pressures never mix within the union body.

  • Self-supported, dynamic elastomeric sealing

    Self-supported sealing design provides reliable sealing performance during operation, with dynamic elastomeric sealing providing effective sealing for continuous rotary duty, backed by a hardened sealing rotor for improved wear resistance and longer service life.

  • Widely spaced bearings absorb side load

    Widely spaced ball bearings help absorb side loads and provide stable operation, keeping every passage aligned and sealed even under off-axis mechanical load.

Operating conditions

Parameter & rating

Hydraulic oil pressure rating is speed-dependent — final selection is confirmed against your specific media, pressure, temperature, and speed requirements.

Parameter & rating

MediaWater, air, gas, vacuum & hydraulic oil
Max. speed250 RPM
Max. pressure — water, air & gas15 bar
Max. pressure — hydraulic oil, up to 250 RPM60 bar
Max. pressure — hydraulic oil, up to 10 RPM400 bar
Max. temperatureUp to 90°C
Size range1/8″ single port to 2″ multiport
Connection typeFlange mounted, threaded, or customized

Need multiple media circuits through one rotating union?

Contact the Carbon Rotofluid technical team with your media, pressure, speed, and passage count requirements, and we'll confirm the correct 600 Series configuration for your application.