DANN Hydraulic is a rotary union manufacturer in China providing compatible replacement solutions for Deublin® and other international rotary union brands. Our Deublin 1890 Series Rotary Union replacement is designed for industrial applications requiring reliable transfer of compressed air, hydraulic oil, vacuum, or other compatible media between stationary and rotating equipment.
The 1890 Series is particularly suitable for applications requiring two independent flow passages, alternating pressure, or multiple media circuits in low-speed rotating machinery.
For OEM manufacturers, maintenance companies, industrial distributors, and end users, DANN Hydraulic provides standard replacement models as well as drawing-based and application-specific rotary union solutions.
Trademark Notice: DANN Hydraulic manufactures independent aftermarket replacement products. Deublin® is a trademark of its respective owner. Our products are not manufactured, authorized, or endorsed by Deublin.
The 1890 Series rotary union is primarily designed for low-speed pneumatic and hydraulic applications requiring more than one fluid passage.
Compared with a conventional single-passage rotary union, the 1890 configuration can support independent channels for different pressure circuits or operating functions.
Typical applications may involve:
Selected configurations are available in two-channel or tandem multi-passage designs.
This makes the series useful for machinery requiring alternating pressurization, independent media passages, or controlled rotary fluid transfer.
One of the main characteristics of the 1890 Series is its multi-passage configuration.
Independent flow channels can be used for applications such as:
This design allows multiple functions to operate through a single rotating connection.
Related terms:
two-channel rotary union, dual passage rotary joint, multi-passage rotary union, hydraulic rotating connector
Depending on the specific model and sealing configuration, the 1890 Series can be used for:
Suitable for pneumatic fixtures, automation systems, rotating actuators, and industrial machinery.
Suitable for rotary hydraulic equipment where independent pressure circuits must be transferred through a rotating shaft.
Selected models can also be configured for vacuum service.
Final media compatibility should always be confirmed according to the exact model, seal material, pressure, temperature, and operating conditions.
In multi-channel rotary unions, preventing internal cross-contamination is particularly important.
The 1890 Series design uses separated fluid passages, and suitable configurations can incorporate venting between channels to reduce the possibility of one media circuit entering another.
For replacement manufacturing, our engineering team pays particular attention to:
This is especially important in hydraulic and pneumatic systems where circuit reliability affects machine operation.
Replacing an imported rotary union requires accurate mechanical matching.
DANN Hydraulic uses precision machining processes for critical parts including:
Accurate dimensions help improve:
For existing equipment, we can manufacture according to the original model, drawing, sample, or confirmed installation dimensions.
Deublin 1890 Series compatible rotary unions may be used in:
Dual passages can independently control:
Common in machine fixtures and automated production equipment.
Suitable for:
Used when hydraulic or pneumatic pressure must pass through continuously rotating equipment.
Applications include:
The 1890 Series replacement may also be considered for:
DANN Hydraulic focuses on rotary unions, rotary joints, and rotating fluid-transfer components.
Our engineering experience covers:
This specialization allows us to evaluate replacement projects based on actual operating requirements rather than only matching the external appearance.
We provide compatible replacement solutions for international rotary union brands used in industrial machinery.
For Deublin replacement projects, customers can provide:
Our team reviews the application before recommending or producing a replacement.
Depending on the model, our inspection process may include:
For multi-channel rotary unions, passage integrity and sealing reliability are particularly important.
Not every existing machine uses a standard configuration.
We can evaluate customization involving:
This is useful when an original part is discontinued, difficult to source, or needs adaptation for a specific machine.
This category contains DANN Hydraulic products developed for Deublin 1890 Series rotary union replacement applications.
Available configurations may include:
Individual product pages provide more detailed information about dimensions, media, threads, and operating requirements.
If your exact model is not currently listed, send us the model number or technical drawing for evaluation.
To identify the correct 1890 replacement, please provide:
Providing this information helps avoid selecting a rotary union based only on series name.
No. DANN Hydraulic manufactures compatible aftermarket rotary unions intended for replacement applications.
Many 1890 configurations use two independent passages, while tandem versions with additional passages are also available. Exact configuration depends on the model.
Typical applications include compressed air and hydraulic oil. Certain configurations may also be suitable for vacuum service.
Yes. Customers can provide an original sample, drawing, dimensions, or model number for engineering evaluation.
Yes. Passage layout, connections, sealing materials, and dimensions can be evaluated according to application requirements.
If you need a Deublin 1890 Series Rotary Union replacement from a China manufacturer, send DANN Hydraulic your original model or application information.
We support:
Contact our engineering team for model matching, replacement evaluation, and quotation.
Showing the single result
Deublin Rotary Union Replacement Manufacturer | Custom Solutions Available
