Description
High-Performance Thermal Management for Liquid Cooling Systems
Amphenol Industrial Operations introduces the UQD & UQDB Series—compact, high-performance connectors designed for advanced liquid cooling systems used in data centers, AI servers, EV charging infrastructure, and energy storage solutions. These couplings are fully compliant with the Open Compute Project (OCP), offering leak-free operation, fast installation, and long-term durability.
Leak-Free Reliability and Performance
Built with aerospace-grade sealing and a bidirectional dry-break valve, UQD and UQDB connectors minimize fluid loss and ensure clean disconnection—even under pressure. This makes them ideal for maintaining thermal integrity in critical liquid cooling systems.
Quick Connect & Blind-Mate Functionality
The UQD Series offers a fast, secure plug-in connection, while the UQDB Series features blind-mate capability with 1 mm radial alignment compensation—perfect for confined or low-visibility installations common in rack servers and modular ESS units.
Durable, Configurable, and Corrosion-Resistant
Engineered from stainless steel with corrosion-resistant springs and advanced seal materials (EPDM, FKM, FMVQ), these connectors are available in four standard OCP sizes (02, 04, 06, 08). Termination options include threaded and hose barb styles in straight or right-angle configurations, plus optional flat-latch mechanisms.
Broad Coolant Compatibility
Compatible with deionized water, ethylene glycol, and propylene glycol, these couplings are optimized for use in modern liquid cooling systems that demand thermal efficiency across different sectors.
Applications for Liquid Cooling Systems
These quick disconnect connectors support reliable performance in a variety of high-efficiency cooling environments:
- AI Data Centers – Efficient thermal management in high-density rack infrastructure
- EV Charging Infrastructure – Secure fluid pathways for power electronics and cooling loops
- Energy Storage Systems (ESS) – Safe coolant handling in battery packs and inverters
- High-Performance Computing (HPC) – Leak-free operation for compute-intensive environments
- Military & Aerospace Electronics – Field-proven durability under mission-critical conditions
- Server Manifolds – Simplified installation in modular liquid-cooled server environments
UQD & UQDB Technical Specifications Comparison
Specification UQD Series UQDB Series
Size Range UQD02, UQD04, UQD06, UQD08 UQDB02, UQDB04, UQDB06, UQDB08
Material Options Stainless steel shell & wetted spring Stainless steel shell & wetted spring
Sealing Materials EPDM, FKM, FMVQ EPDM, FKM, FMVQ
Temperature Range -40°C to +105°C -40°C to +105°C
Connection Type Quick connect with optional latch, Inline or right-angle Blind-mate with 1 mm radial compensation, Inline or right-angle
Working Pressure 0–0.6 MPa 0–0.6 MPa
Safe Pressure 1–2 MPa 1–2 MPa
Flow Coefficient (Cv) 0.4 to 3.7 (based on size) 0.4 to 3.83 (based on size)
Fluid Loss per Disconnect ≤ 0.01 ml ≤ 0.01 ml
Mating Cycle Rating 1000+ cycles 1000+ cycles
Coolant Compatibility Deionized water, ethylene glycol, propylene glycol Deionized water, ethylene glycol, propylene glycol
Certifications & Compliance OCP UQD Spec Rev 1.0, ISO 9001, IATF 16949 OCP UQDB Spec Rev 1.0, ISO 9001, IATF 16949
Why Choose UQD & UQDB for Liquid Cooling Systems?
With rugged construction, multiple configuration options, and full OCP compliance, the UQD & UQDB Series provide peace of mind for OEMs and system designers. Their precision mating mechanisms, fast installation, and long service life make them a trusted choice for thermal management systems across mission-critical sectors.
Get Started with Amphenol Liquid Cooling Systems
Contact Amphenol Industrial Operations today or download the spec sheet to learn how UQD & UQDB connectors can enhance your liquid cooling system design.
Features & Benefits
Secure Fluid Connections: UQD and UQDB connectors feature aerospace-grade sealing and a bidirectional dry-break valve, delivering leak-free performance and minimizing the risk of coolant loss or accidental spillage.
Blind-Mate and Quick Connect Options: Choose between standard quick plug-in or blind-mate designs with 1 mm radial alignment compensation, facilitating seamless installation even in low-visibility or confined environments.
Durable Stainless Steel Construction: Constructed with corrosion-resistant stainless steel shells and springs, both series are built for long-term reliability in mission-critical liquid cooling systems.
Coolant Compatibility: Compatible with deionized water, ethylene glycol, and propylene glycol, these connectors address the varied thermal management needs of data centers, EVs, and energy storage systems.
Compact and Configurable: Available in four OCP-compliant sizes (02–08), with inline or right-angle styles, barb or threaded terminations, and optional flat-latch mechanisms to accommodate diverse system architectures.
Specifications
Electrical
Not applicable to this product type
These are mechanical fluid couplings
Mechanical
Working Pressure
0–0.6 MPa
Safe Pressure
1–2 MPa
Blind-Mate Tolerance
0-1 mm radial self-alignment
Material
Shell
Stainless Steel
Spring (Wetted)
Corrosion-resistant Stainless Steel
Seal Options
EPDM, FKM, FMVQ (selected based on coolant compatibility)
Termination Options
Hose barb, Male/Female thread (ORB, BSP)
Latch Type
Flat-design button
Environmental
Operating Temperature
40°C to +105°C
Coolant Compatibility
Deionized water, Ethylene glycol, Propylene glycol
Drip-Free Design
Yes (dry-break mechanism)
Compliance
OCP UQD & UQDB Spec Rev 1.0
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