The Air & Hydraulic Multi-Passage Rotary Union / Joint is a robust mechanical device designed to transfer pressurized air or hydraulic fluid from a stationary source into rotating machinery through multiple independent passages. It is ideal for low-speed applications where simultaneous transfer of multiple media lines is required for heating, cooling, clamping, or fluid power transmission.
These rotary unions are engineered for dependable performance, smooth rotation, and long service life. With flexible passage configurations and durable construction, they are widely used in industrial automation and machinery requiring multi-line fluid distribution. Each unit can be customized to meet specific operational and application requirements.
Multiple independent passages for air and hydraulic fluid transfer
Designed for low-speed, high-reliability applications
Smooth operation with stable sealing performance
Supports two-way and multi-passage flow configurations
Strong and durable construction for industrial environments
Customizable design as per client application




| Parameter | Specification |
|---|---|
| Product Type | Air & Hydraulic Multi-Passage Rotary Union / Joint |
| Size Range | 1/4 Inch to 2½ Inch (NB) |
| Connection Type | BSP / BSPT / NPT Threads |
| Number of Passages | 2 to 16 Passages (Custom configurations available) |
| Pressure Range (Air) | 0 – 10 to 0 – 12 kg/cm² |
| Pressure Range (Hydraulic) | 0 – 160 to 0 – 204 kg/cm² |
| Temperature Range | 0 – 100°C |
| Maximum RPM | Up to 250 RPM |
| Flow Options | Two Way, Multi-Passage |
| Bearing Type | Bush Bearing |
| Material Options | Aluminium, Mild Steel (MS), EN8, etc. |
| Application Media | Compressed Air, Hydraulic Fluid |
| Customization | Available as per application requirement |
| Spare Seal Kit | Available in all sizes |
Note :
Reliable, high-performance Rotary Unions, Mechanical Seals & Slip Rings designed for all industrial applications.