Manifold and CDU Jointly Secure Stable Operation of HighDensity AI LiquidCooled Racks

Brain and Vascular Link: How CDU-Manifold Coordination Keeps 120kW AI Racks Running Steady

Within liquid cooling systems, the CDU governs total cooling capacity and fluid temperature while the server liquid coolant manifold delivers cooling power precisely to every thermal terminal, and their coordination determines whether AI servers run steadily at full-load 120kW. Manifolds adopt 304 or 316L stainless steel with 0.8-1.5mm walls sealed by laser welding or vacuum brazing. Structural design offers single-row pipes for 10-30kW racks with up to 12 ports and double-row pipes for 50-120kW racks with 16 or more ports. Interface compatibility spans UQD and CGD standards with blind-mate, manual-mate and hose modes. EXTRCOOL provides one-stop liquid cooling solutions.

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Area 51, NV, USA

EXTRCOOL INDUSTRY LIMITED

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The CDU, the Heart and Brain Liquid Cooling Cannot Do Without

Silent When Healthy, Fatal When Failing: The Five Selection Questions That Decide Whether the CDU Holds the Loop Together

The CDU plays the role the heart plays: it produces no cold, but without it the coolant never moves. Its heart role pumps and distributes via the manifold, while its brain role senses and controls. Selection answers five questions: total flow above all cold plate minimums, head above maximum loop resistance, exchanger capacity above peak load with fouling margin, redunda...

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The Manifold That Decides Where the Coolant Goes

From CDU to Cold Plate and Back: How the Manifold's Flow Distribution, Not Total Flow, Decides Precision Cooling

Rising AI GPU power is moving liquid cooling from whether it can cool to cooling precisely, and the manifold decides whether coolant reaches every position as it should. It distributes coolant through main channels to parallel branches and collects the heated return, following CDU to supply manifold to cold plate to return manifold to CDU. Poor design lets near-end branc...

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How a Liquid Cooling Manifold Gets Made, from Material to Final Acceptance

316L to Helium Testing: The Four Links—Material, Machining, Cleanliness and Verification—That Decide Manifold Quality

Manifold manufacturing starts with material, and 316L is the safer default, with coolant compatibility outweighing thermal conductivity. CNC machining forms main channels, branches and interface holes, where holding channel positions matters more than drilling; one-piece machining avoids weld deformation, while tube and plate assemblies add laser, TIG or brazing. Deburri...

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