Liquid Cooling Components Gain Attention in September 2026 Buyer Market
Shenzhen, China – September 21, 2026 – On September 17, ODATA announced that installation and testing of its DeltaFlow liquid-cooling technology were underway at campuses in Brazil and Mexico. A week earlier, Blackstone announced an agreement to acquire Flow Control Holdings, whose components are used in coolant distribution units, manifolds and secondary fluid networks. Together, these announcements put attention on the hardware behind liquid cooling—not only the servers it supports.
For OEM purchasing teams, the practical question is where a custom component belongs in that hardware. A machined adapter may solve an awkward port connection. A mounting bracket may simplify installation. Neither should be approved merely because its quotation includes the words “AI cooling.”
The purchasing opportunity starts with a defined interface, not a market headline.
Three Announcements Worth Following
ODATA: Installation and Testing Are Already Underway
ODATA’s September 17 announcement identifies two deployment locations: SP04 in Brazil and QR03 in Mexico. It associates the first phase with a combined US$630 million investment and says installation and testing have started at both facilities. That investment should not be read as a disclosed purchasing budget for fittings or cooling components alone.
The announcement also identifies an existing manufacturing location: DeltaFlow equipment is being produced at Munters’ Araucaria facility in Brazil, complementing U.S. manufacturing. For prospective suppliers, the useful details are the build location and deployment stage. They provide a better starting point for research than assuming every announced campus expansion represents an open RFQ.
Delta: Cooling Is Being Integrated Before Site Installation
In a news-center update posted on September 17, Delta described infrastructure supporting NVIDIA DSX-based AI factories. Its thermal-management portfolio includes 2.4 MW and 3 MW liquid-to-liquid cooling distribution units. Delta also describes prefabricated infrastructure blocks combining power equipment with 3 MW of liquid-cooling capacity, assembled and tested before deployment. These are company-reported system configurations, not ratings transferable to individual fittings.
For component buyers evaluating prefabrication, an important question follows: which interface checks must be completed at the equipment factory, rather than left for installation on site? Put those checks into the purchasing package before ordering production quantities.
Blackstone: Investment Reaches the Component Supply Chain
Blackstone’s September 10 announcement concerns an agreement to acquire Flow Control Holdings from Audax Private Equity. FCH supplies engineered flow-control components for data-center cooling and other industries. Blackstone specifically identifies coolant distribution units, in-row manifolds and secondary fluid networks among their applications.
The transaction is expected to close in the fourth quarter; financial terms were not disclosed. It is therefore an announced acquisition agreement, not a completed transaction. Our reading is that this is a signal of investment in component manufacturing capacity—not evidence of an order available to every custom-parts supplier.
Where Does a Custom Fitting Fit?
A threaded adapter and a valved quick-disconnect coupling are different products. CPC’s liquid-cooling range, for example, includes purpose-designed valves, seals, latches and connection configurations. Its selection guidance also distinguishes where connectors sit in the system and how their size and style should change with the application.
Do not substitute an ordinary hose-barb adapter for a specified non-spill coupling. Where a custom adapter is needed beside an approved connector, preserve the approved mating interface and define the new part’s requirements separately.
For a mixed mechanical package, use the following scope check:
| Part Being Quoted | Define Before Manufacturing | Keep Separate |
|---|---|---|
| Hose-barb or threaded adapter | Hose specification, mating port, barb geometry, bore and sealing arrangement | Connection fit versus validated pressure and leakage performance |
| Machined manifold body | Passage layout, ports, sealing faces, material and cleaning requirements | Machining acceptance versus complete cooling-system validation |
| Mounting bracket or spacer | Hole positions, support surfaces, fastener access and installation envelope | Structural support versus fluid containment |
| Panel bushing or cable guide | Panel opening, panel thickness and cable-bundle clearance | Cable-edge protection versus pressure sealing |
The table is a suggested RFQ structure, not a bill of materials disclosed by the companies named in this article.
“316 Stainless Steel” Is Not a Complete Specification
Material selection matters, but the alloy name does not answer every procurement question. CPC’s liquid-cooling guidance treats coolant compatibility, body materials, seals and flow performance as separate considerations. That is a useful reminder to specify the whole connection rather than approve it by appearance or material name alone.
For custom cooling fittings, our recommendation is to resolve three details before comparing prices.
Start with the Actual Fluid and Operating Duty
Provide the coolant designation, concentration where applicable, operating temperature and pressure requirements. Include the relevant supplier specification rather than writing only “water cooling.”
Ask who will approve material compatibility and who will validate the assembled connection. Keep those responsibilities visible in the quotation. A material certificate and a completed assembly test serve different purposes.
Put the Mating Port on the Drawing
An RFQ should identify the full thread designation and the intended sealing arrangement. Include the mating-port drawing, required engagement, sealing surfaces and installation access.
For a hose-barb end, provide the hose specification or a sample, the retention method and the permitted assembly conditions. Avoid asking the manufacturer to infer all of these from a photograph of the fitting.
A part can match a requested outline while the installation requirement remains undefined.
Replace “Perfectly Clean” with an Acceptance Requirement
State the required cleaning, inspection and packaging scope. Where particle or residue limits matter, identify the test method and acceptance criteria.
Likewise, specify the leak-test method, test conditions and acceptance limit when testing is part of the supply agreement. “Leak-free” in a brochure is not a test specification.
A Practical RFQ: Keep the Approved Interface, Change the Packaging
Consider an illustrative project, not a reported customer case: an equipment builder has an approved hose and connector arrangement, but the adapter leaves insufficient clearance for installation inside a compact cooling skid.
Instead of changing the complete connection, the buyer asks for a comparison between a revised adapter body and a revised mounting bracket. The approved mating interface remains fixed. The supplier reviews the available envelope, wrench access and manufacturing route.
Prototype approval would then cover drawing dimensions, installation access and the agreed assembly tests. Any change to the wetted geometry or sealing interface would return to the responsible engineering team for review.
That is a specific custom-manufacturing task. It also gives suppliers enough information to explain cost differences without guessing the operating requirements.
What Should Go into a Liquid Cooling Component RFQ?
Before releasing the drawing package, check that it answers the following questions:
| RFQ Section | Information Required |
|---|---|
| Part and interface | 2D drawing, available 3D model, revision and mating-component details |
| Material and finish | Alloy, material condition, coating or passivation requirements, and permitted alternatives |
| Fluid and duty | Coolant specification, temperature range, pressure requirements and relevant operating cycles |
| Installation | Hose details, retention method, sealing arrangement, tool access and assembly space |
| Acceptance | Critical dimensions, cleaning requirements, requested tests and responsibility for final validation |
| Commercial scope | Prototype quantity, repeat-order volumes, documentation and packaging |
Ask suppliers to distinguish the machined part price from any additional assembly, testing or documentation costs. State whether hoses, clamps, seals and bought-in connectors are included or supplied separately.
For prototype work, confirm what the sample is intended to prove. A dimensional sample for checking installation is not automatically a functionally qualified production assembly.
FAQ: Custom Cooling Fittings and Component SourcingAre all hose-barb fittings suitable for data-center liquid cooling?
No. Suitability must be established for the selected connection and application. Purpose-designed liquid-cooling couplings have their own material, sealing, flow and connection requirements; a similar-looking adapter should not be treated as an equivalent product.
What should be sent when a fitting needs a custom length or port connection?
Provide the fitting drawing or sample, mating-port details, hose requirements and available installation space. Add material, operating conditions, quantity and the required acceptance checks.
Can a custom part be developed without changing an approved connector?
That can be the starting requirement for a manufacturing review. Identify the interface that must remain unchanged and the geometry that may be modified. Any proposed change affecting sealing or fluid performance should be reviewed before approval.
Can metal and plastic components be sourced as one project?
Sunmy can review coordinated manufacturing requirements for machined adapters, stamped brackets and molded protective parts. Define each component’s function and the final interface checks; a combined quotation should not imply that every part has the same material or validation requirements.
From Expansion News to a Manufacturable Part
September’s announcements provide concrete examples of cooling deployment, prefabricated infrastructure and investment in component suppliers. For an individual OEM project, the next useful step is smaller and more precise: identify the connection or installation problem, then define the part needed to solve it.
Shenzhen Sunmy Hardware Co., Ltd. supports custom manufacturing from customer drawings and samples. For fittings and related hardware, the review starts with geometry, materials, mating interfaces and the agreed inspection scope—not a universal performance claim.
About Us
Sunmy Hardware is a direct custom manufacturer and engineering facility based in Shenzhen. We operate a vertically integrated model: providing in-house DFM analysis, precision machining, and direct global fulfillment. Since 2016, we have partnered directly with EU & US engineering teams to deliver high-quality custom parts without middleman markups.
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