
Quick Connect Coupling Solutions for Data Centres
and High-Performance Electronics
The data centre industry is developing at a rapid speed. The increasing demand for Cloud, AI, IoT, and Edge applications drives the requirement for increased cooling capacity at a fast development pace. More advanced and powerful thermal management liquid cooling systems are needed to maintain the required cooling temperatures in data centre applications. Quick connect and disconnect couplings play a critical role.
CEJN coupling solutions enable high-performing liquid cooling systems in data centres:
• CEJN is a contributor to the Open Compute Project (OCP)
• Non-drip high flow quick coupling with a screw-to-connect mechanism for data centre Coolant Distribution Units (CDU)
• Compact quick connect coupling solutions with or without blind-mate function for Direct Liquid Cooling (DLC) applications
• Flat-face non-drip quick connectors with a low-pressure drop for an efficient connection & disconnection of Immersion Cooling Tanks
CEJN – Part of the OCP initiative
CEJN is a proud contributor to the OCP community, designing and developing interchangeable quick connect solutions alongside industry leaders and manifold and chassis manufacturers for the data centre industry.
CEJN has long experience in quick coupling technology for thermal management and their expertise in quick coupling technology will ensure they meet and exceed the requirements. They offer a wide range of interchangeable coupling solutions developed within the OCP.

CDU • DLC • IMMERSION COOLING
High flow quick couplings for an even and maintained cooling temperature in CDUs
The Coolant Distribution Unit (CDU) is the core of the liquid cooling system, responsible for evenly distributing coolant throughout the data server racks while maintaining the desired temperature and flow rate.

Quick couplings are essential in CDU systems as they efficiently and safely transfer coolant through the CDU’s inlets and outlets. Since operators frequently need to connect and disconnect cooling lines while the system is in operation, a screw-to-connect coupling solution is more efficient due to its ease of use compared to push-to-connect types. CEJN offers specially designed coupling solutions tailored for CDU applications in data centres, featuring high flow capacity, minimal pressure drop for improved performance, and the ability to connect and disconnect while under working pressure.

Ensure a reliable DLC process with high-quality quick couplings
Quick couplings are essential in CDU systems as they efficiently and safely transfer coolant through the CDU’s inlets and outlets. Since operators frequently need to connect and disconnect cooling lines while the system is in operation, a screw-to-connect coupling solution is more efficient due to its ease of use compared to push-to-connect types.
CEJN offers specially designed coupling solutions tailored for CDU applications in data centres, featuring high flow capacity, minimal pressure drop for improved performance, and the ability to connect and disconnect while under working pressure.

Depending on the needs and requirements of the data centre DLC infrastructure, two types of coupling solutions can be used: hand-mate quick connect couplings or blind-mate solutions with misalignment tolerance. CEJN provide both options, both are hot-swappable allowing connection and disconnection without shutting off the CDU.

Quick connect couplings for an efficient Immersion Cooling process
Immersion Cooling is an efficient and sustainable method in which IT systems are submerged in tanks with nonconductive or dielectric liquid through single phase or dual phase immersion cooling. Inside the tanks, a liquid-to-liquid heat exchanger cools the dielectric fluid, directly interacting with servers and heat generating IT gears. Quick couplings connect the tanks with facility cooling water, often in very limited spaces where compact quick connectors with small outside dimensions are needed, whilst maintaining the highest performance and lowest pressure drop. CEJN ultraFLOW quick connectors fulfil these requirements as they provide a lightweight and compact design with a flat-face non-drip solution for low pressure fluids, ensuring the system operates efficiently.
This process consumes significantly less power than air cooling, making it one of the most environmentally friendly solutions for heat dissipation. Another cooling technique is a hybrid solution of Immersion Cooling and DLC, in which the DLC is used to cool the processor’s most heat exposed components (GPU, CDU, TPU).
