Stainless Steel Manifolds for Data Center Cooling

As rack densities climb, data centers are turning to liquid cooling to keep servers running at peak performance. At the center of every liquid cooling loop is the Cooling Distribution Unit (CDU), and at the center of every CDU is the manifold that delivers coolant to and from the racks. A leak or a flow imbalance isn't an option.

Thermaline has spent decades building stainless steel process equipment for industries where cleanliness, precision and reliability are non-negotiable. We now bring that same experience to data center cooling with a line of stainless steel CDU manifolds, designed and manufactured entirely in-house.

4" and 6" Manifolds

Thermaline offers stainless steel CDU manifolds in both 4" and 6" header sizes, so you can match the manifold to the flow requirements of your system, from compact CDUs to high-capacity units serving full rows of racks.

4" and 6" stainless steel headers
Branch count, spacing and connections built to your design
Clean, corrosion-resistant stainless steel construction
Consistent, repeatable quality from unit to unit

*4" and 6" stainless steel CDU manifolds*

Precision You Can Count On

A manifold is only as good as its fit-up. Every Thermaline manifold is built to tight dimensional tolerances so that branch locations, alignment and connections land exactly where your CDU design calls for them. That means easier integration on your assembly line, balanced flow across every branch, and leak-free performance for the life of the system.

Quality is checked throughout the build, not just at the end, so every manifold that leaves our shop is ready to install.

Built entirely in-house.

From raw tube to finished manifold, every step happens under one roof in Thermaline's own facility. Keeping the entire process in-house gives us full control over quality, lead times and consistency, and gives you a single partner accountable for the finished part.

Orbital Welding

Orbital welding is the backbone of our manifold production. Instead of relying on a hand-held torch, an automated orbital welding head rotates a precisely controlled arc around the joint, producing the same smooth, full-penetration weld every time.

Repeatable: programmed weld parameters deliver identical results from the first joint to the last
Clean: smooth, crevice-free interior weld beads that won't trap debris or disrupt flow
Strong: consistent, full-penetration welds built for long-term, leak-free service

CNC Machining

Components and fittings are CNC machined in-house for accurate, repeatable dimensions on every part.

Tube Branching

Branch connections are formed directly from the header tube, giving clean, precisely located outlets ready for welding.

Polishing

Finished manifolds are polished in-house for a clean, professional finish that looks as good as it performs.

Building or sourcing CDUs?

Whether you need a single prototype or production volumes of 4" or 6" manifolds, contact our engineering team to discuss your project.