Product · Leak-free fluid connections
Quick Disconnect Couplings for high-density liquid cooling systems.
QDCs support secure fluid routing across CDUs, rack manifolds, servers, and cold plate assemblies. They allow liquid-cooled infrastructure to be installed, serviced, isolated, and scaled without draining the full cooling loop.
Quick Disconnect Couplings
Small components. Critical connection points.
QDCs are used throughout high-density liquid cooling infrastructure to reduce fluid loss, support fast service workflows, and create reliable connection points between the cooling system and compute hardware.
Built for liquid-cooled rack serviceability.
QDCs allow racks, servers, and cooling hardware to be connected or isolated without disrupting the entire system.
Where QDCs fit.
Quick disconnect couplings are not limited to one point in the loop. They appear across CDU, manifold, server, and cold plate connection layers.
Interface 1
CDU to Rack Manifold
QDCs can connect the cooling distribution unit to rack manifolds, helping racks connect or isolate from the cooling loop.
Interface 2
Rack Manifold
Manifolds distribute cold coolant and collect warm return fluid across server positions.
Interface 3
Server Connections
QDCs connect server trays or GPU nodes so systems can be installed, removed, or serviced more efficiently.
Interface 4
Cold Plate Routing
Some designs use compact QDCs near cold plate or hose assemblies to support platform-specific routing.
Why QDCs Matter
Service without draining the loop.
QDCs help minimize fluid loss during maintenance and reduce leak risk at connection points.
They support modular rack deployment, faster service access, and cleaner liquid cooling integration.
Typical Applications
CDU, manifold, server, and cold plate interfaces.
QDCs are commonly used for rack manifold distribution, CDU interface connections, GPU cold plate connections, and liquid cooling retrofit deployments.
PAI supports sourcing across standard and project-specific connector requirements.
Connector Features
Low-spill, high-reliability connections.
QDC configurations may include dry-break designs, high-flow geometry, valve-integrated fittings, male and female coupler sets, threaded styles, and panel-mount options.
Selection depends on flow requirement, pressure drop, space constraints, service cycles, and system compatibility.
Deployment Fit
Designed around rack constraints.
High-density racks require connector choices that fit dense physical layouts while maintaining reliable flow paths and service access.
PAI helps align QDC selection with CDU, manifold, hose, and cold plate architecture.
Technical focus areas.
QDC selection affects leak control, flow performance, pressure drop, serviceability, and fit across the rack cooling loop.
| Category | What matters | Why it matters |
|---|---|---|
| Leak control | Dry-break and low-spill connection design | Reduces fluid loss and helps protect surrounding hardware during service |
| Flow performance | High-flow internal geometry and low restriction | Helps maintain coolant delivery across dense liquid cooling loops |
| Serviceability | Fast connect and disconnect functionality | Supports modular replacement and maintenance workflows |
| System fit | Compatibility with manifold, hose, and CDU assemblies | Improves integration across rack-level cooling architecture |
| Coolant support | DI water and glycol-based system compatibility | Allows use across common single-phase cooling environments |
Connector types by application.
Quick disconnect coupling is the system-level category. Different connector series are selected based on flow requirement, physical space, serviceability, and the connection point.
| Connection point | Typical QDC type | What usually matters |
|---|---|---|
| CDU to rack manifold | Higher-flow QDC, often UQD series | Larger flow capacity, low restriction, reliable rack isolation |
| Rack manifold to server | Mid-size QDC, often UQD or similar formats | Balanced flow, compact fit, repeatable service connections |
| Server or node-level liquid routing | Compact QDC, often MQD or similar formats | Dense spacing, ease of maintenance, modular replacement |
| Cold plate loop integration | Application-specific compact QDC or fitting configuration | Platform fit, routing flexibility, service access |
Available Configurations
QDC formats for rack liquid cooling.
QDC solutions across multiple flow and size classes, including UQD, MQD, threaded, panel-mount, valve-integrated, and male/female coupler sets.
Project-specific sizing and layout options are available depending on rack architecture and deployment requirements.
Ideal Use Cases
GPU, HPC, colocation, and high heat-load liquid cooling systems.
H100, H200, GB200, HPC, colocation, modular data center, and other high heat-load deployments, plus CDU-to-rack connections, manifold supply and return lines, OEM liquid cooling assemblies, and retrofit work.
Request QDC supply for your deployment.
Pacific AI Infrastructure supports QDC sourcing for high-density cooling projects requiring reliable rack-level fluid connections. Share your rack count, GPU platform, target timeline, and deployment location so PAI can review fit, configuration, availability, and volume requirements.