Tél. 33 (0)3 23 70 70 00 • duff-france@duffnorton.fr

Dear Customers,

Following the recent government statements on the COVID-19 pandemic, we have activated our Business Continuity Plan. Therefore, we would like to reassure you that Duff-Norton Europe will remain open during this period of containment, taking all sanitary measures to protect our personnel and keep our services operational at 100% of their capacity to continue to serve you fully.

Please do not hesitate to contact us by e-mail or by phone at the usual numbers for all your future requests and orders.

3S Series


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


Technical Data:

Number of ports: 1 way
Fluid: Air, Oil
Rotation Speed: Low speed (from 5 to 20 RPM), Intermediate speed (from 20 to 1500 RPM), High Speed (from 1500 to 5000 RPM)
Pressure working: Very Low (from -0,6 bar to 0 bar), Low (from 0 to 10 bars)
Size: from 1/8″ to 1/4″
Material: Steel
Surface treatment: Not available
Implantation: Angle elbow
Temperature working: Up to 120°C
Connection: Thread

*for any other type of connection, please contact us.

Quick Ship Program (QSP) :

Available products within 1 working day (ex-works)

Carbon Steel:

– 3S2086K
– 3S3747K
– 3S3747KNPTD

Stainless Steel,Models:

Not available

STEP files for downloading:

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