Product · CDU connection layer
CDU Interfaces for liquid-cooled high-density racks.
Interface hardware and integration assemblies that connect liquid-cooled racks to coolant distribution units, supporting supply and return routing, serviceability, and rack-level system integration for GPU, HPC, colocation, and other high heat-load deployments.
CDU Interfaces
The connection point between the CDU and the rack.
CDU interface components help liquid-cooled racks connect cleanly into coolant distribution systems with the correct routing, access, fittings, and deployment alignment.
Built for decoupled liquid cooling systems.
The CDU separates facility water from the rack-side cooling loop. Interface hardware at this boundary needs to fit the deployment architecture, not just the component drawing.
Where CDU interfaces fit in the loop.
The interface layer sits after the CDU and before the rack cooling loop. This is where connection hardware, routing, hoses, valves, and manifold integration need to line up.
Step 1
Facility Water
Building-side chilled water or heat rejection infrastructure supplies the primary loop to the CDU.
Step 2
CDU
The CDU decouples the primary and secondary loops, controls coolant conditions, and circulates clean coolant.
Step 3
Interface Layer
CDU interface assemblies route supply and return lines between the CDU and rack manifold infrastructure.
Step 4
Rack Cooling Loop
Coolant flows through manifolds, hoses, QDCs, and cold plates, then returns warmed coolant back through the CDU.
Why It Matters
Clean rack-to-CDU connection.
CDU interfaces help avoid mismatch between the CDU, manifold layout, hose routing, valve placement, and field installation requirements.
Important for high-density GPU, HPC, colocation, and other high heat-load racks where service access, flow path clarity, and deployment consistency matter.
Typical Applications
Rack cooling integration.
Used in CDU-connected liquid cooling systems, in-rack CDU layouts, floor-mounted CDU architectures, and direct-to-chip high-density rack deployments.
Often aligned with manifolds, hoses, valves, quick disconnects, and rack-level routing hardware.
Design Focus
Fit, access, and flow path.
Interface hardware should support the actual rack layout, CDU position, service path, connection angle, and coolant routing strategy.
PAI supports configuration alignment across CDU interfaces, manifolds, QDCs, hoses, and installation hardware.
Deployment Fit
Built around the project.
CDU interface requirements can change by rack density, CDU type, facility layout, hose routing, and project timeline.
Share your rack architecture, CDU type, deployment schedule, and preferred connection layout so we can review fit.
Operational priorities at the CDU layer.
CDU-side integration is not only about the part. It is about whether the full cooling loop can be installed, serviced, and operated reliably.
| Category | What matters | Why it matters |
|---|---|---|
| Decoupling | Separation of facility water from the IT cooling loop | Protects rack-side cooling conditions and allows tighter control of coolant delivery |
| Flow control | Stable coolant routing through the CDU-to-rack interface | Supports thermal consistency across the secondary loop |
| Temperature control | Clean supply and return integration with monitored loop conditions | Helps maintain proper coolant conditions and avoid condensation-related issues |
| Serviceability | Accessible interfaces for maintenance and modular connection | Improves uptime and simplifies field replacement or system expansion |
| System integration | Compatibility with manifolds, hoses, valves, and QDC assemblies | Ensures reliable fit across rack and CDU connection architecture |
Available Configurations
Interface supply options.
Supply and return side connection assemblies, rack-to-CDU integration hardware, QDC-compatible layouts, valve and hose integration, and project-specific routing options.
Target Environments
GPU and HPC racks.
High-density GPU rack programs, HPC deployments, colocation environments, in-rack CDU deployments, floor-mounted CDU architectures, enterprise liquid cooling projects, and custom rack liquid cooling builds.
Request CDU interface supply for your deployment.
Pacific AI Infrastructure supports CDU-side interface hardware and connection assemblies for liquid-cooled GPU, HPC, colocation, and high heat-load deployments. Share your rack architecture, CDU type, deployment timeline, and system layout so PAI can review configuration fit and supply alignment.