Custom coolant distribution manifolds for AI and high-density data centers. In-rack, in-row, and row-distribution manifolds in 304L/316L stainless steel — precision-welded, pressure-tested, passivated, and fully traceable. Engineered for the leak-free reliability that direct-to-chip and CDU cooling demands.
From the rack to the row, we fabricate the full range of coolant distribution manifolds that connect CDUs to cold plates in direct-to-chip liquid cooling architectures.
In-Rack Vertical manifolds mounted in the server rack, interfacing cold-plate loops with the CDU. Multiple drip-free quick couplings for per-server connection.
In-Row Horizontal manifolds distributing coolant along a row of racks, balancing flow and pressure across multiple rack manifolds.
Row Distribution Larger-bore manifolds interfacing the CDU with in-row loops, with isolation valves, air-bleed provisions, and flow setters.
Custom / CDU Bespoke tube assemblies and manifolds fabricated to fit the cramped quarters of a CDU — custom-bent and welded to your envelope and connection spec.
Coolant-contact components demand chemical compatibility, corrosion resistance, and engineered cleanliness. Here are the specifications we manufacture to.
| Wetted Materials | 304L / 316L stainless steel (industry standard for coolant contact) |
|---|---|
| Tube Diameters | Custom — sized to flow rate and CDU/rack envelope |
| Welding | Precision TIG / orbital welding; full-penetration, low-contamination joints |
| Pressure Testing | Hydrostatic or pneumatic test method, limits and sampling defined by RFQ |
| Cleanliness | Passivated, flushed, dried, and sealed — ready for deployment |
| Couplings | Dry-disconnect, drip-free quick couplings; sanitary clamps; flanged |
| Integrated Components | Isolation valves, flow setters, air-bleed valves, mounting hardware |
| Coolant Compatibility | Water / glycol (PG25 etc.); wetted-material compatible per spec |
| Traceability | Full documentation per unit — material certs, weld & test records, QR-traceable |
| Architectures | Direct-to-chip (D2C), in-rack, in-row, row-distribution, CDU pipework |
Coolant manifolds live or die on weld integrity and cleanliness. Our process engineers both in from the start.
Precision cutting and CNC bending of 304L/316L tube to the manifold geometry — minimizing joints and fitting the target envelope.
TIG / orbital welding of joints, branches, and fittings — full-penetration, low-contamination welds that hold pressure and resist corrosion.
Installation of quick couplings, isolation valves, flow setters, and air-bleed provisions to your connection specification.
Hydrostatic or pneumatic testing is performed only to the agreed pressure, hold time, acceptance limits and sampling plan before cleaning.
Passivation, flushing to remove weld residue and debris, drying, and sealing — so no contaminants reach the cold plates downstream.
Capped and sealed, with full documentation — material certs, weld and test records — traceable per unit, ready for drop-in installation.
Every coolant-contact surface must be corrosion-resistant and chemically compatible. Stainless steel has become the industry standard — here's how the grades compare.
The premium wetted-material standard. Superior corrosion resistance and broad coolant compatibility — preferred for long-life, mission-critical loops.
The cost-effective industry standard. Excellent corrosion resistance and coolant compatibility at lower cost than 316L — widely specified for manifolds.
Traditional in early designs, increasingly replaced by stainless for coolant compatibility and cost. Available where a design specifically requires it.
Not sure which grade fits your coolant and budget? See our 304 vs 316 stainless steel guide — or send us your spec for a recommendation.
Industry planning scenarios for AI racks can involve high heat loads, but the actual rack duty is defined by the system integrator. The manifold distributes coolant from the CDU to cold plates through integrator-defined interfaces; figures cited for AI racks are industry context, not a DRAmetal capacity claim. System-level thermal performance remains with the integrator.
A manifold sits inches from live electronics worth far more than the manifold itself. A single leak can destroy a rack. The OEM must define the required test method and acceptance criteria for the quoted manifold.
Weld residue, tape, or debris in the fluid path clogs cold-plate microchannels and kills thermal performance. Engineered cleanliness — passivated, flushed, dried — protects the whole loop.
Pre-assembled, tested, sealed manifolds eliminate on-site fabrication — removing the biggest source of contamination and installation error in the field.
Full documentation from production to installation — material certs, weld and test records — gives operators confidence in long-term reliability.
Materials, fabrication decisions and results for an anonymous customer project.
Component reference image
Uneven flow caused local temperature differences in high-density AI racks, and some pipe joints leaked.
Results apply to the project configuration described on the linked page.
Read the Customer Project →Build-to-print fabrication routes for cold plates and manifolds are reviewed against released drawings, materials and test requirements.
Pressure or leak testing follows the agreed project method, acceptance limits, sampling plan and record requirements.
Passivated, flushed, dried, and sealed — so the manifold protects the cold plates and the whole loop downstream.
TIG and orbital welding to full-penetration, low-contamination standards — the joints a coolant manifold's reliability depends on.
Material certs, weld records, and test records per unit — fully documented from production to installation.
Dedicated fabrication capacity to meet the constrained supply and tight timelines of the AI data center buildout.
304L and 316L stainless steel — the industry standard for wetted (coolant-contact) materials. 316L offers the broadest coolant compatibility and best corrosion resistance; 304L is a cost-effective alternative with very good performance. We help you choose based on your coolant and budget.
Pressure testing can be included when the RFQ defines the hydrostatic or pneumatic method, pressure, hold time, sampling plan, acceptance limits and required records.
Every manifold is passivated, flushed to remove weld residue and debris, dried, and sealed before shipping. This engineered cleanliness protects the cold-plate microchannels downstream from clogging and preserves thermal performance.
In-rack (vertical), in-row (horizontal), row-distribution (large-bore, CDU-side), and custom CDU pipework. We support direct-to-chip (D2C) architectures and can integrate quick couplings, isolation valves, flow setters, and air-bleed provisions to your spec.
Yes. We build to your envelope, connection standard, coupling type, and flow requirements. Send us your drawings or requirements and our engineering team will review the submitted information and, where the scope is complete, provide a DFM review and quote.
Yes — full documentation per unit, including material certificates, weld records, and pressure-test records, traceable from production to installation.
Send us your drawings, envelope, and connection spec. Our engineering team will review the submitted information and, where the scope is complete, provide a DFM assessment, material recommendation, and production timeline matched to your deployment schedule.