ROTARY UNITS
SPECIAL VERSIONS
EXAMPLES
Precision underwater
Custom-engineered stainless steel rotary unions for hydraulics, compressed air, and other media.
Designed for extreme operating conditions, superior corrosion resistance, and maximum reliability.
When rotating components require a reliable supply of media underwater, utmost precision, durable sealing systems, and corrosion-resistant materials are essential. It is precisely for these demanding underwater applications that KONSTANDIN develops and manufactures rotary unions.
Our rotary distributors connect stationary and rotating machine elements, enabling the safe transfer of hydraulic oil, compressed air, or other media – whether in fresh water, saltwater, or contaminated environments.
Rotary unions for underwater use
Each application places different demands on pressure, medium, material, or installation space. Close collaboration with your design team results in a solution that is both technically and economically optimal.
We develop solutions that work
For many years, KONSTANDIN has been developing and manufacturing custom solutions for applications that demand the highest levels of reliability and service life. Our strength lies not in standard products, but in custom-engineered rotary unions tailored precisely to the specific application.
You receive everything from a single source – from the initial concept and design through to manufacturing – backed by personal technical advice and streamlined decision-making processes.
Our rotary unions offer:
- Custom-engineered designs for your application
- Corrosion- and saltwater-resistant materials
High-quality stainless steel versions - Specially sealed ball bearings for maximum service life
- High resistance to dirt and demanding environmental conditions
- Custom material combinations for optimal media compatibility
- Compact designs ranging up to complex multi-channel rotary unions
Are you planning an underwater application?
Do you need a rotary union for hydraulics, compressed air, or other media for underwater applications? Our technical experts will work with you to develop a tailor-made solution.
Get in touch with us – we would be happy to provide personal advice.
Rotary unions for underwater use
Article no. ZK5520-H
Technical Data
| Channels: | 12 |
| Connection housing: | G3/8″ |
| Rotation speed: | 40 U/min |
| Rotary movement: | continuous, clocking |
| Pmax: | 70 bar |
| Medium: | Hydraulics |
| Temperature range: | +5°C to +40°C |
| Features: | – Extra-sealed ball bearings – stainless steel |
| Application: | Underwater |
Article no. ZK5521-H
Typ DDF-12-1/8″-H-SO
Technical Data
| Channels: | 12 |
| Connection housing: | G1/8″ |
| Rotation speed: | 50 U/min |
| Rotary movement: | continuous, clocking |
| pmax: | 10 bar |
| Medium: | Compressed air |
| Temperature range: | +5°C to +40°C |
| Features: | – Extra-sealed ball bearings – stainless steel |
| Application: | Underwater |
Article no. LK102727-H
Typ DDF-2-M5-H-SO
Technical Data
| Channels: | 2 |
| Connection housing: | M5 |
| Rotation speed: | 10 U/min |
| Rotary movement: | continuously, under pressure, unpressurized |
| pmax: | 8 bar |
| Medium: | Compressed air |
| Temperature range: | +5°C to +40°C |
| Features: | – Extra-sealed ball bearings – stainless steel |
| Application: | Underwater |
Rotary unions for underwater use
Benefit from our many years of expertise. We develop the right solution for you.