Modern machinery rarely needs just one fluid circuit through a rotating shaft. Cooling, lubrication, hydraulics, and pneumatics often have to pass through the same journal simultaneously — without cross-contaminating or interfering with each other. The Multiport range solves this with multiple fully isolated flow passages inside a single rotary union body, in three configurations depending on circuit count and whether electrical signal or power has to travel with them.
Running several single-passage unions side-by-side on one shaft is possible, but it multiplies seal points, axial length, and failure risk. A multiport union consolidates every circuit into one body, one bearing arrangement, and one maintenance point — while keeping each circuit's media completely isolated from the others through independent seal rings and passages.
The base configuration. Multiple independent flow passages (typically 2–6 ports, higher counts on request) through a single rotating body, each circuit sealed and isolated from its neighbours. Used wherever a machine needs more than one fluid circuit — coolant and lubricant, hydraulic supply and return, or several independent process media — transferred through the same rotating shaft.
View specs →The 600 Series body combined with an integrated electrical slip ring assembly, so fluid circuits and electrical power or signal transfer share the same rotating interface. Built for machines that need instrumentation, sensors, or motor power on the rotating side — for example, a rotating drum with embedded temperature sensors that still needs coolant flowing through its shaft.
View specs →A duplex-sealed variant of the 600 Series, adding a secondary seal barrier between adjacent circuits. Intended for applications where circuits carry significantly different pressures or incompatible media, and a single seal wall between passages isn't enough isolation — for example, a high-pressure hydraulic circuit running alongside a low-pressure instrumentation air line in the same union body.
View specs →| Housing | Cast iron / Carbon steel |
| Rotor | Stainless steel |
| Seal rings (per circuit) | Carbon / CFT |
| Slip ring assembly (600S only) | Precious-metal or fibre-brush contacts, per circuit rating |
| Bearings | Sealed ball or sleeve, per duty |
| Fasteners | Standard |
| Port count | 2–6 standard (600 / 600S), higher on request |
| Circuit isolation | Fully independent sealed passages |
| Electrical circuits (600S) | Power and/or signal, per slip ring spec |
| Size range | To be confirmed per port count and bore |
| Max pressure / speed | Per circuit, media-dependent |
Multi-axis rotary tables, rotating drums with instrumentation, combined hydraulic/pneumatic rotating manifolds, and any rotating machine interface where two or more independent circuits — fluid, electrical, or both — need to cross from stationary to rotating without physically separate unions.