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Rotary unions are mechanical devices enabling one or more fluids to be transferred from a fixed part to a rotary part whilst ensuring a fully effective seal between the two parts. There are several types of rotary union in order to meet all our customers’ needs.

Rotary unions can carry one or more fluids simultaneously, at different pressures and temperatures. Duff-Norton Europe rotary unions enable your fluids to be carried at between 0 and 700 bar (up to 1500 bar for certain special products), whilst permitting oscillatory motion or rotational movements of almost 5000 rpm. Our rotary unions can be bought in chemical nickel-treated steel (anti-corrosive treatment) or in stainless steel, or in any other material according to your needs.

Product list :
Séries 400 & 4200 - Série 600-700 - Séries 1000 & 1000-2 - Séries 1800SR & 1800SRDE - Séries 1200SR2 & 1400SR - Série 3S - Séries BATR & BATRVR - Séries 800SR5 & 900SR5 - Séries 1600 & 1600B - Séries MC, MCR2 & MCRVR - Série BR - Séries GR, GCV & VR - Série 5000 - Série 9000 - Série 8000 - Série 8100RSQ - Série 4500 -

Séries 400 & 4200

These bronze unions allow heat conductor fluids to be carried whilst compensating for the dilation of your unit.


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Série 600-700

600-700 series rotary unions enable fluids to be transferred at medium pressures and speeds.


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Séries 1000 & 1000-2

Simply designed, these unions allow fluids to be transferred at up to 80 bar whilst still allowing oscillation or rotation of a few rpm.


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Séries 1800SR & 1800SRDE

Thanks to their robust design, these rotary unions can handle operating pressures up to 700 bar.


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Séries 1200SR2 & 1400SR

These right-angled rotary unions allow you to transfer your high-pressure fluids without adding an elbow to your installation.


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Série 3S

These rotary unions are mostly used on clutches and pneumatic control systems.


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Séries BATR & BATRVR

These rotary units enable fluids to be carried in your existing installations.


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Séries 800SR5 & 900SR5

These rotary unions enable fluid transfer to your turning rollers in a single or return circuit.


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Séries 1600 & 1600B

1600 and 1600B series rotary unions enable 2 fluids to be carried at high rotation speeds.


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Séries MC, MCR2 & MCRVR

These multi-circuit rotary unions enable several fluids to be carried at different pressures on your installation.


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Série BR

These rotary couplings enable the transfer of fluids for your installations requiring a high throughput (up to 12-inches).


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Séries GR, GCV & VR

These sliding and rotary seals ensure a perfect seal between the units on your installation.


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Série 5000

Simply designed, these rotary unions enable the transfer of all types of fluid on your installations.


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Série 9000

Fitted with a bellows-type seal, these rotary unions ensure the transfer of your fluids whilst guaranteeing great mounting flexibility.


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Série 8000

Designed to transfer heat-conductor fluids, the simple design of the 8000 series is effective up to rotation speeds of 600 rpm.


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Série 8100RSQ

Designed specifically for paper-industry applications, this rotary union ensures the transfer of your fluids at up to 1460 rpm.


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Série 4500

Series 4500 rotary unions are specially-designed for continuous-flow applications combining an effective seal and longevity.


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