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Streamlining Rack Integration
In a direct liquid cooling system, the rack manifold does two jobs that determine how the deployment actually operates: it distributes coolant evenly across every server in the rack, and it lets your team add, remove, or service individual servers without interrupting flow to adjacent systems. CoolIT manifolds are engineered for low pressure drop, balanced flow, and are 100% leak tested including the quick disconnects.
Design Options
Orientation & Height
CoolIT manifolds support both traditional configurations or vertical blades, in range of both U and OU heights.
- Horizontal or vertical orientations
- EIA racks: 42U, 48U, 52U
- ORV3 racks: 44OU
- Custom heights available for any configuration
FEED POSITION
QUICK DISCONNECTS
SINGLE OR DUAL SIDED
Standard Configurations
CoolIT offers standard products available for typical rack configurations:
| EIA Rack Series |
| ORV3 Rack Series |
| MGX Rack Series |
Standard Configurations
Benefits
- Easy installation with no special training required
- Mounts in the rack like a standard PDU
- Engineered for low-pressure drop and balanced flow
- Rigorous end-of-line testing ensures product reliability
- Customizable front or rear rack placement
Features
Built For The Reliability Demands Of Production Liquid Cooling
In a direct liquid cooling system, a manifold failure doesn’t just affect one server; it affects every server in the rack. CoolIT’s manifolds are engineered, manufactured, and tested with that consequence in mind.
- Reliability by design. CoolIT applies aerospace-grade design principles to manifold geometry and connection architecture. Material selection (corrosion-resistant treated stainless steel throughout) is chosen for long-term compatibility with data center coolant chemistries, not just initial performance. Internal flow paths are designed to minimise debris accumulation and eliminate the dead zones where particulate can settle and cause problems over time.
- Reliability by manufacturing. CoolIT’s manufacturing processes for manifolds draw on techniques used in high-integrity fluid systems. Connection points (which are the most failure-prone area in any liquid cooling assembly) are produced to tolerances that maximize sealing integrity over repeated connection and disconnection cycles. Every manifold is assembled under controlled conditions designed to prevent the introduction of contamination into the fluid path.
- Reliability by testing. Every CoolIT manifold undergoes 100% leak testing before it ships (including the quick-disconnect fittings) under both static and dynamic conditions. This isn’t sampling or batch testing; it’s full end-of-line validation on every unit. The result is a manifold that arrives on-site already proven.
Trusted by the best
“As a recognized provider of direct liquid cooling (DLC) technology, CoolIT Systems offers solutions that can enhance energy efficiency and support sustainability goals in high-density environments. Their DLC systems are well-suited for facilities like ours, where advanced cooling options are essential for maintaining performance and reducing environmental impact.”
Chris Larsen
CTO
“CoolIT's DLC technology has helped us revolutionize our approach to scientific computing. It allows us to maintain elevated cooling water temperatures and achieve unparalleled computational density.”
Dr. Alastair Basden
Head of the DiRAC Memory Intensive HPC Service at Durham University and co-chair of the DiRAC Technical Directorate.
“CoolIT and Giga Computing have collaborated for many years, bringing excellent cooling solutions to market and supporting more GIGABYTE DLC ready servers with the latest gen CPUs and GPUs. We are always looking to enhance our server performance and reliability, and that is what CoolIT's products contribute to our IT hardware.”
Vincent Wang
Sales VP at Giga Computing
“Supermicro has a strong and collaborative relationship with CoolIT Systems. Their reliable, scalable cooling solutions complement Supermicro’s high-performance, high-density server systems, particularly for demanding AI and HPC workloads to deliver next-generation performance in data centers.”
Michael Mcnerney
Senior Vice President Marketing and Network Security
FAQs about Rack Manifolds
Can I service or replace a single server without shutting down the rest of the rack?
Yes. CoolIT manifolds use zero-spill quick-disconnect fittings that seal simultaneously on both the manifold port and the server-side connector when a server is disconnected. The loop remains pressurized and flowing to all other servers in the rack. There is no need to drain the system or interrupt cooling to adjacent nodes during a server swap or maintenance event.
What rack formats does CoolIT support?
CoolIT offers standard manifold configurations for EIA racks, ORV3 racks, and MGX series racks with connection points scaling from 42-52. Custom heights and configurations are available for non-standard or proprietary rack formats. Contact us with your rack specification below, and one of our representatives will confirm the right configuration.
Do CoolIT manifolds work with my existing CDU and coldplate setup?
CoolIT rack manifolds are hardware-agnostic. They’re designed to work with any CDU and any liquid-cooled server platform—CoolIT’s own or third-party. Compatibility is determined by connector type, port sizing, flow requirements, and pressure specifications. Talk to an engineer by filling out the form below to confirm compatibility with your specific configuration before proceeding with a specification.
How does the manifold connect to the TCS?
The manifold connects to the TCS via supply and return lines. FD83 quick-disconnect connectors are the most commonly used TCS connection type in production deployments. Connection routing—overhead piping, underfloor supply, or direct rear-of-rack—depends on your facility layout and CDU placement. CoolIT manifolds support front or rear rack placement and multiple feed positions (top, bottom, or rear entry) to accommodate different facility approaches.
Does installation require specialized training or tools?
No. Standard CoolIT manifolds mount in the rack using the same process as a PDU, no custom tooling, no facility modification, and no specialist liquid cooling training required for the installation step.
What coolant types are compatible with CoolIT manifolds?
CoolIT manifolds are constructed with corrosion-resistant treated stainless steel and validated for compatibility with standard data center coolant formulations. Propylene glycol 25% (PG25) is the most commonly used coolant in direct liquid cooling deployments and the standard formulation CoolIT manifolds are validated for. Coolant chemistry outside standard formulations should be validated with CoolIT’s engineering team before deployment.
Are CoolIT manifolds certified?
Yes. CoolIT manifolds carry UL certification. Full certification details are included in the manifold product specifications.
Can CoolIT build a custom manifold for a non-standard rack or server layout?
CoolIT’s manifold designs are platform-driven. Each one originates from the specific requirements of the rack format, server layout, and connection architecture it’s built for. While CoolIT maintains standard configurations for EIA, ORV3, and MGX rack series, in practice virtually every manifold deployment involves some degree of customization: port count, feed position, orientation, connection type, or form factor. CoolIT’s engineering team scopes each programme from a platform architecture baseline and adapts from there. Talk to an engineer to discuss your requirements.
How reliable are CoolIT manifolds?
CoolIT manifolds are built for the demanding uptime requirements of AI, HPC and hyperscale data centers. Corrosion-resistant construction, proven quick-disconnect technology and decades of liquid cooling expertise deliver dependable coolant distribution and long-term operational confidence. As part of CoolIT’s end-to-end direct liquid cooling portfolio, manifolds benefit from the same engineering depth and proven track record trusted in hundreds of deployments worldwide.
Rack Manifold Product Specifications
Get tailored guidance on designing and deploying rack manifold system. A download will be sent to your email.
