Description
Liquid cooling systems depend on reliable quick disconnect connectors to support efficient thermal management in AI data centers, high-performance computing, EV charging infrastructure, and energy storage systems. Amphenol Industrial Operations offers a broad portfolio of liquid cooling quick disconnect connectors engineered to support serviceability, sealing performance, and flexible cooling architecture design.
The portfolio includes the UQD, UQDB, UQD/UQDB Rev 2.0, BMQC, LQC, MQD, and SHQD series. These connector families are designed to support modern cooling loops across server racks, coolant distribution units, source lines, manifolds, blind-mate interfaces, and compact tray-level thermal systems.
Table of Contents
- Liquid Cooling Systems Overview
- UQD Series Quick Disconnect Connectors
- UQDB Blind Mate Quick Disconnect Connectors
- UQD / UQDB Rev 2.0 Liquid Cooling Connectors
- BMQC Blind Mate Quick Connectors
- LQC Large Flow Quick Disconnect Connectors
- MQD Multi Quick Disconnect Connectors
- SHQD Source-Line Quick Disconnect Connectors
- Liquid Cooling System Applications
- Compare Liquid Cooling Connector Families
- Why Choose Amphenol Industrial Operations
- Engineering & Application Support
Liquid Cooling Systems Overview
As computing densities continue to rise, liquid cooling systems are becoming increasingly important for removing heat from AI servers, high-performance computing platforms, and other advanced power electronics. Quick disconnect liquid cooling connectors support these systems by enabling efficient coolant transfer, streamlined maintenance, and modular system expansion without sacrificing sealing integrity.
Amphenol Industrial Operations supports a wide range of thermal management architectures with connector solutions for compact server trays, blind-mate rack interfaces, high-flow CDU infrastructure, and source-line distribution. Several product families align with Open Compute Project standards, including the OCP UQD listing and the OCP BMQC listing.
UQD Series Quick Disconnect Connectors
The UQD Series provides standardized quick disconnect performance for liquid cooling systems that require fast manual engagement and reliable coolant containment. These connectors are well suited for server-level cooling loops and other modular thermal management applications where service access and connection speed are important.
UQD connectors support multiple sizes and configuration options, helping engineers integrate cooling connections across a broad range of data center and industrial thermal architectures.
UQDB Blind Mate Quick Disconnect Connectors
The UQDB Series is designed for blind-mate liquid cooling applications where connectors must align and connect during system insertion. This architecture helps simplify rack-level installation and maintenance in high-density server environments where direct manual connection may be limited.
UQDB connectors support improved serviceability while maintaining secure fluid transfer across critical cooling interfaces.
UQD / UQDB Rev 2.0 Liquid Cooling Connectors
The UQD/UQDB Rev 2.0 platform expands the original quick disconnect architecture with updated geometry, improved flow capability, and broader interoperability across modern data center liquid cooling systems. Rev 2.0 helps support evolving OCP-aligned cooling designs where improved performance and more defined interface control are increasingly important.
For designers building next-generation rack and manifold systems, Rev 2.0 offers an updated option for scalable and service-friendly cooling infrastructure.
BMQC Blind Mate Quick Connectors
The BMQC Series is engineered for blind-mate rack applications that must tolerate installation misalignment while maintaining reliable coolant transfer. These connectors are especially relevant for Open Rack V3 style architectures and other rack-level cooling systems where fast, repeatable blind-mate performance is critical.
BMQC connectors support simplified installation and robust mechanical performance in high-density liquid cooled rack environments.
LQC Large Flow Quick Disconnect Connectors
The LQC Series is designed for liquid cooling systems that require larger flow capacity and secure mechanical engagement. With a large nominal flow path and screw-to-connect coupling style, LQC connectors are well suited for cold plates, manifold interfaces, and other higher-flow thermal management applications.
LQC supports reliable connection integrity where vibration resistance and controlled engagement are important design considerations.
MQD Multi Quick Disconnect Connectors
The MQD Series is tailored for compact liquid cooling systems where available space is limited. Its smaller footprint helps support dense server tray layouts and other confined cooling installations without sacrificing reliable fluid connection performance.
MQD connectors are a strong fit for designers who need compact geometry, serviceability, and cooling performance in the same connector platform.
SHQD Source-Line Quick Disconnect Connectors
The SHQD Series is designed for source-line liquid cooling connections where higher flow capacity and enhanced safety are critical. These connectors support larger coolant lines and are well suited for CDU infrastructure and facility-level coolant distribution within advanced liquid cooling systems.
SHQD helps address demanding source-line applications that require dependable coolant transfer, serviceability, and secure connection performance.
Liquid Cooling System Applications
- AI data center liquid cooling
- High-performance computing (HPC)
- Coolant distribution units (CDUs)
- Server manifolds and blind-mate rack interfaces
- Rear door heat exchangers
- Energy storage systems (ESS)
- EV charging thermal management
Compare Liquid Cooling Connector Families
| Connector Series | Connection Type | Typical Use | Key Benefit |
|---|---|---|---|
| UQD | Quick disconnect | Server-level cooling loops | Fast manual service connection |
| UQDB | Blind mate | Rack installation | Self-aligning coolant connection |
| UQD/UQDB Rev 2.0 | Enhanced quick disconnect / blind mate | Updated OCP-aligned cooling platforms | Improved flow and interoperability |
| BMQC | Blind mate | Rack-level OCP architectures | Misalignment-tolerant installation |
| LQC | Screw-to-connect | Higher-flow cooling loops | Secure locking engagement |
| MQD | Multi quick disconnect | Compact tray-level systems | Small-footprint design |
| SHQD | High-flow quick disconnect | Source-line cooling infrastructure | Full-flow performance with added safety features |
Why Choose Amphenol Industrial Operations
Amphenol Industrial Operations supports demanding industrial markets with interconnect solutions engineered for performance, durability, and application flexibility. For liquid cooling systems, this portfolio helps engineers and OEMs select the right connector family for compact spaces, blind-mate rack interfaces, larger flow paths, or source-line coolant infrastructure.
- Broad liquid cooling connector portfolio
- Solutions for compact, blind-mate, and high-flow applications
- Support for AI, HPC, EV, and ESS thermal architectures
- OCP-aligned options for modern data center cooling systems
Engineering & Application Support
To learn more about these liquid cooling systems and connector families, contact the Amphenol Industrial Operations team through our Sales Support page. We can help you identify the right quick disconnect, blind-mate, large-flow, mini, or source-line connector for your thermal management design.
Features & Benefits
Secure Fluid Connections: Amphenol liquid cooling connectors are engineered for leak-resistant performance with aerospace-grade sealing, bidirectional dry-break capability, and corrosion-resistant materials to help protect critical thermal management systems.
Quick Connect, Blind-Mate, and Hybrid Mating Options: The portfolio includes standard quick plug-in, blind-mate, and hybrid mate connector options to support different rack, tray, manifold, and service-access requirements. UQDB and Rev 2.0 designs add blind-mate capability, while Rev 2.0 also supports UQD plug to UQDB socket hybrid mating.
Compact to High-Flow Design Flexibility:From MQD mini quick disconnects for compact compute trays to SHQD source-line connectors designed for full-flow applications, the product family supports both space-constrained and high-capacity cooling architectures.
Safety-Focused Cooling Performance: SHQD connectors add dual interlock safety features to help avoid spills, prevent accidental valve opening when disconnected, and support safer maintenance in source-line cooling applications.
Durable Stainless Steel Construction: Across the portfolio, stainless steel shells, corrosion-resistant wetted springs, and EPDM-based aerospace-grade sealing support durability and long-term reliability in demanding liquid cooling environments.
Improved Flow and OCP-Aligned Performance: UQD/UQDB Rev 2.0 introduces standardized testing, fully defined geometry, and improved flow performance aligned to updated OCP requirements, while several connector families support OCP-driven data center liquid cooling architectures.
Flexible Configurations and Termination Options: Available configurations across the family include multiple sizes, straight and right-angle options, push-pull locking, screw-to-connect interfaces, and a range of thread, barb, sanitary flange, and customized termination options.
Broad Thermal Management Application Fit: These connectors support AI data servers, computer trays, CDU systems, rack manifolds, and other thermal management applications where compact design, flow efficiency, and serviceability are important.
Specifications
Electrical
Not applicable to this product type
These are mechanical fluid couplings
Mechanical
Connection Styles
Quick connect, blind-mate, screw-to-connect, and source-line connector options
Blind-Mate Capability
Available on select series including UQDB, UQD/UQDB Rev 2.0, and BMQC
Alignment Features
Series-specific self-alignment and blind-mate tolerance depending on application
Form Factors
Standard, compact, large-flow, and full-flow options across the portfolio
Flow Architecture
Standard, compact, large-flow, and full-flow options across the portfolio
Material
Shell Materials
Stainless steel
Wetted Metal Components
Corrosion-resistant stainless steel
Termination Options
EPDM, FKM, FMVQ based on coolant compatibility and series
Termination Options
Hose barb, threaded, sanitary flange, and series-specific configurations
Connection Hardware
Flat-latch, push-pull, screw-lock, blind-mate, and interlock designs depending on family
Environmental
Coolant Compatibility
Deionized water, ethylene glycol, and propylene glycol
Sealing Performance
Dry-break / leak-resistant designs depending on series
Operating Range
Series-specific temperature ranges available by product family
Standards Alignment
OCP-aligned solutions available across multiple connector families
Application Environments
AI data centers, HPC, CDU systems, rack manifolds, ESS, EV charging, and source-line coolant infrastructure
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