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UQBD blind-mate liquid cooling connector
Blind-mate UQD coupling
UQDB Series Blind-Mate Floating Quick Disconnect Coupling
UQBD blind-mate liquid cooling connector
Blind-mate UQD coupling
UQDB Series Blind-Mate Floating Quick Disconnect Coupling

UQDB Series Blind-Mate Floating Coupling

The Guchen UQDB Blind-Mate Floating Quick Disconnect Coupling is a precision-engineered connector designed specifically for high-performance computing (HPC) environments and data center liquid cooling systems. It enables accurate mating even when the connection point cannot be directly visualized or precisely aligned, relying solely on its mechanical guiding mechanism. With adaptive floating compensation, it can absorb positional deviations caused by robotic arm tolerances, thermal expansion, or vibration.
Available Models: UQDB02, UQDB04, UQDB06, UQDB08
Please download the product catalog to review the connector dimensions, complete product model information, plug and socket dimensions, materials, and technical parameters such as flow curves.
Operating Temperature:
-40℃ ~ +120℃
Working Pressure:
20 bar
Burst Pressure:
80 bar
Nominal Diameter:
DN03, DN05, DN07, DN10
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Guchen UQDB Blind-Mate Stainless Steel Couplings
The Guchen UQD/UQDB product family is developed and designed in accordance with Intel and OCP standards, covering specifications such as dimensions, materials, mating cycles, liquid loss, pressure and flow ratings, as well as color coding and identification. With proven reliability, competitive pricing, and fast delivery, Guchen products are increasingly recognized in the global market.

Key Advantages:
◆ Open Compatibility: Fully compliant with OCP international standards, supporting interoperability across brands.
◆ Blind-Mate Design: Enables automated docking without manual intervention. When servers are inserted into rack rails, the male and female couplings connect automatically. The floating alignment structure ensures precise mating, eliminating manual operations in dense deployments. As liquid-cooled data centers evolve toward higher density and automated O&M, blind-mate couplings are expected to become the standard in high-density environments.
◆ Premium Materials: Constructed from 316L stainless steel. With added molybdenum, 316L offers superior resistance to chloride-induced corrosion (common in liquid coolants) and excellent acid-alkali resistance, making it the material of choice for demanding applications.
Guchen liquid cooling quick disconnect connectors
Technical Features of UQDB Blind-Mate Quick Couplings:
UQDB Maximum axial misalignment compensation: 1 mm● Zero-Drip Seal: Flat-face design ensures absolutely no leakage upon disconnection.
● Floating Tolerance: ±1 mm compensation for misalignment.
● High Reliability: Resistant to corrosion, wide operating temperature range, and robust performance in harsh conditions.
● Broad Compatibility: Suitable for deionized water, glycol-water mixtures, and other liquid coolants.
● The couplings utilize a flat-seal interface, making them a core component in direct liquid cooling (DLC) systems. This design preserves the structural integrity required in data centers while enabling hot-swappable server maintenance. Liquid loss during disconnection is minimized to a thin mist-like film adhering to the contact surface, supporting flexible and efficient server rack configurations.
● By adopting metal quick couplings, the UQDB series significantly enhances reliability and service life. For high-density servers carrying expensive HPC workloads, this level of performance is essential.
Applications of Guchen UQDB Couplings
Guchen’s UQDB solution represents the integration of materials science, precision mechanics, fluid dynamics, and quality management. More than just a “connector”, it is a critical infrastructure component that ensures the stable and efficient operation of AI-driven hyperscale data centers.
liquid cooling connectors
UQDB Couplings for Data Center Liquid Cooling
Data Center Liquid Cooling
UQDB Couplings for Supercomputing Systems
Supercomputing Systems
UQDB Couplings for 5G Base Stations and Power Electronics
5G Base Stations and Power Electronics
UQDB Couplings for Semiconductor Testing and Manufacturing
Semiconductor Testing and Manufacturing
Technical Specifications of Guchen UQD Couplings
 
Technical Specifications
Nominal Diameter DN03, DN05, DN07, DN10
Body Material 316L Stainless Steel
Seal Material EPDM
Working Pressure 20 bar
Burst Pressure 80 bar
Operating Temperature -40℃ ~ +120℃
Compatible Fluids Deionized water, purified water, water-glycol (ethylene glycol or propylene glycol), fluorinated liquids
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