Stainless steel fittings for data center liquid cooling
The connections between your cooling headers and your racks — engineered in 304 and 316L stainless, built for the fluids and the uptime your facility runs on.
Titan Fittings supplies the off-rack side of the liquid cooling loop: transition fittings, isolation ball valves, flexible hose connections, and 1-inch OCP LQC quick disconnects that take coolant from a 4-, 6-, or 8-inch header down to the rack.
We focus on the connections that carry the most risk
In a liquid-cooled facility, most of the field-assembled joints aren't at the chip — they're between the distribution headers and the racks. That's the rack drop: the transition down from a large stainless header, the valve that isolates a rack for service, the hose that absorbs misalignment, and the dripless coupling that lets a rack come on and off line without spilling coolant near live hardware.
It's the part of the loop a mechanical contractor assembles thousands of times on a single build, and it's where fitting quality shows up first at commissioning and last in the maintenance log. It's what we build for.
Rack-to-infrastructure connections
The off-rack side of the loop — header to rack
Transition fittings & adapters
Step down from a 4-, 6-, or 8-inch header to the line feeding the rack, and adapt between thread and connection standards across the drop. Machined in 304 and 316L stainless for clean, leak-tight joints on the secondary loop.
Isolation ball valves
Full-port stainless valves let a technician take a single rack out of service without draining or depressurizing the rest of the loop. Low pressure drop across headers feeding dozens of racks.
Flexible hose connections
Absorb the misalignment, thermal movement, and vibration between a rigid header and a rack that was never positioned to the millimeter — and make the final connection something a crew can complete by hand in a tight aisle.
1" OCP LQC quick disconnects
The OCP Large Quick Connector — the standard purpose-built for the facility-to-rack and CDU-to-manifold connection. Screw-to-connect, dripless, and connectable under working pressure, so racks come on and off line without shutting down the loop. We supply the 1-inch size, the common choice for rack drops on 4-inch headers.
In-rack fittings & quick disconnects
When a project needs the full path covered, we also supply the in-rack side — fittings, manifolds, and quick disconnects at the server and cold-plate interface. Same stainless grades, same coolant compatibility, from the header all the way to the node.
Built for coolant service, not repurposed for it
Two grades cover the loop. 304 stainless handles distribution and structural duty at lower cost; 316L adds corrosion resistance and a low carbon content suited to the clean, sometimes deionized-water service on the technology cooling loop. Deionized water is aggressive toward the wrong metals and glycol blends demand materials that hold up over a decade of service — which is why we build in stainless only, and why we don't put brass or plastic anywhere in the coolant path.
Every fitting is compatible with PG25, deionized water, and the water-glycol blends in use across direct-to-chip, rear-door, and immersion systems — and rated well above the pressures these loops actually run.
Specifications at a glance
The numbers behind the range
| Materials | 304 and 316L stainless steel — no brass or plastic in the coolant path |
| Pressure rating | 200 psi — typical loops run ~125 psi |
| Coolant compatibility | PG25, deionized water, water-glycol blends — direct-to-chip, rear-door, and immersion systems |
| Quick disconnect | 1" OCP LQC (Large Quick Connector) — screw-to-connect, dripless, connectable under working pressure |
| Header sizes served | 4 in, 6 in, and 8 in distribution headers down to the rack line |
| Origin | US-manufactured |
| Lead time | Weeks, not months — one of the fastest in the industry |
Who we supply
Scaling direct-to-chip and high-density AI deployments
Fabricating skids, row manifolds, and rack drops
Retrofitting and servicing liquid-cooled halls
Common questions
304 for distribution and structural duty at lower cost; 316L where corrosion resistance and low carbon content matter — the clean, sometimes deionized-water service on the technology cooling loop.
The Large Quick Connector is the OCP standard for the facility-to-rack and CDU-to-manifold connection — screw-to-connect and dripless. UQDs are the smaller in-rack couplings at the server and cold-plate interface. We supply both sides.
Yes — the LQC connects under working pressure, and the isolation ball valve takes a single rack out of service without draining or depressurizing the rest of the loop.
Your header sizes and rack-drop count. From there we help you spec the transitions, valves, hoses, and couplings for the drop.
Learn more
Why Titan
Specifying a liquid-cooled build or retrofit?
Send us your header sizes and rack-drop count, and we'll help you spec the connections.