DANN Hydraulic is a professional rotary union manufacturer in China, specializing in compatible replacement solutions for Deublin® and other international rotary union brands. Our Deublin 2117 Series Rotary Union replacements are developed for industrial equipment requiring two independent media passages through a rotating connection. The series is particularly suited to compressed air, hydraulic oil, vacuum, and low-speed industrial fluid-transfer applications.
With precision machining, application-based seal selection, dimensional inspection, and OEM engineering support, DANN Hydraulic provides replacement rotary unions for maintenance companies, machinery manufacturers, industrial distributors, and end users seeking an alternative source to imported rotary unions.
The Deublin 2117 Series is a tandem-style dual-passage rotary union designed for low-speed applications.
Unlike a conventional single-passage rotary union, the 2117 configuration combines two independent fluid-transfer circuits within one rotary assembly.
This structure is useful when rotating machinery requires two separate functions, such as:
Independent sealing between passages helps maintain separation between the two media circuits.
Typical media used with specific 2117 configurations include:
Actual compatibility should always be confirmed according to the individual model, working pressure, temperature, rotation speed, and seal configuration.
The most important feature of the 2117 Series is its two independent fluid passages.
A dual-passage structure allows two separate pressure or media circuits to pass through the same rotating connection without requiring two separate rotary unions.
Typical functions include:
This can simplify piping around rotating machinery while maintaining independent circuit control.
Related semantic terms:
dual passage rotary union, two-channel rotary joint, tandem rotary union, multi-passage rotary union, rotating fluid connector
In a two-channel rotary union, internal leakage between passages can cause equipment malfunction even when there is no visible external leakage.
For this reason, passage separation is an important consideration when selecting a 2117 replacement.
Our manufacturing and assembly process focuses on:
This makes the 2117 replacement suitable for applications where two circuits must remain functionally independent.
The 2117 Series can be used in applications requiring two pneumatic circuits through rotating equipment.
Typical examples include:
For compressed-air applications, correct selection should consider operating pressure, required air flow, speed, temperature, and connection dimensions.
The tandem design also makes the 2117 Series suitable for hydraulic applications where two separate hydraulic functions are required.
Applications can include:
For hydraulic replacement projects, DANN Hydraulic evaluates the complete operating condition rather than selecting a unit only by external dimensions.
Selected 2117 configurations can also be used in vacuum-related systems.
Potential applications include:
Vacuum service requires correct sealing and installation conditions, so exact model compatibility should be confirmed before production.
A reliable Deublin 2117 replacement rotary union must match more than the outside appearance of the original part.
Important replacement dimensions may include:
DANN Hydraulic uses precision machining for critical rotary union components.
Manufacturing processes can include:
Accurate machining helps improve installation compatibility and stable operation after replacement.
Different 2117 models can have different rotor connections and dimensional configurations.
For this reason, we do not recommend selecting a replacement based only on the words “2117 Series.”
For accurate evaluation, customers should provide:
Our engineers can then evaluate a standard or customized replacement configuration.
DANN Hydraulic 2117 Series compatible rotary unions may be used in:
Transfer independent pressure circuits to rotating fixtures.
Supply pneumatic or hydraulic media to workholding systems.
Maintain fluid or pressure connections during table rotation.
Support pneumatic, hydraulic, or vacuum functions in rotating automated machinery.
Provide two-channel rotary fluid transfer for equipment requiring customized control circuits.
As a China rotary union manufacturer, DANN Hydraulic supports both standard replacement and customized projects.
Depending on the application, we can evaluate:
Replacement products can be developed according to:
For non-standard applications, we can evaluate:
This is particularly useful when the original imported rotary union is difficult to obtain, discontinued, or requires adaptation to an existing machine.
DANN Hydraulic focuses on rotary unions, rotary joints, and rotating fluid-transfer solutions.
Our technical work includes:
This specialization allows us to evaluate a replacement based on its operating function, rather than simply copying its external appearance.
We provide compatible rotary union solutions for customers using international industrial brands.
For replacement projects, customers can send:
This helps our engineering team identify the required connection and operating configuration.
Depending on the product configuration, inspection can include:
For a tandem dual-passage rotary union, particular attention is given to passage separation and sealing consistency.
This category contains DANN Hydraulic products developed for Deublin 2117 Series Rotary Union replacement applications.
Available products may include:
Individual product pages provide more specific information regarding model dimensions, connection types, media, and operating requirements.
If your exact 2117 model is not listed, send us the model number, drawing, or product photo for identification.
No. DANN Hydraulic manufactures independently produced compatible replacement rotary unions for equipment originally using Deublin 2117 Series products.
Yes. The 2117 Series uses a tandem dual-passage configuration designed to provide two independent media circuits through a rotating connection.
Typical applications include compressed air, hydraulic oil, and vacuum. Exact compatibility depends on the specific model, seals, pressure, temperature, and operating conditions.
The two-channel design is intended to keep the circuits functionally separated. The final replacement configuration should be confirmed according to the original model and machine requirements.
Yes. We can evaluate an existing rotary union drawing, dimensions, or original model number for a replacement project.
Yes. Thread specifications, port connections, dimensions, sealing configuration, and other features can be evaluated for OEM and special replacement projects.
If you are looking for a Deublin 2117 Series Rotary Union replacement manufacturer in China, send DANN Hydraulic your existing model or application requirements.
We provide:
Send your model number, drawing, sample, or operating conditions for replacement evaluation and quotation.
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Deublin Rotary Union Replacement Manufacturer | Custom Solutions Available
