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RAMATOR / DATA CENTRES
High computing power needs cooling that works. Ramator helps you choose connections that keep coolant flowing under control and make maintenance straightforward. Our solutions extend from data centre cooling and heating pipework to liquid cooling of server racks – and, as a separate system, to the secure fastening of power cables.
BIG THINGSdepend on small details.
SOLUTION OVERVIEW
The heat loads of AI and HPC computing place tough demands on cooling. In liquid cooling, tight joints, compatible materials and ease of maintenance are part of operational reliability. Ramator’s technical support helps match the components to the operating conditions of your site.
APPLICATIONSFrom the plant room to the server rack.
6 product families · 4 applications · 2 systems
Cooling and heating networks. Pipelines, plant rooms, and flow and return circuits.
Around the CDUs. Coolant distribution pipework, with SERTO and NORMAQUICK PS3 connections selected for each site.
AI and HPC server racks. Liquid cooling connections and module interfaces.
Power distribution → cable routes → equipment power supply
Power distribution and cable routes. Fastening cables to trays and controlling short-circuit forces.
Schematic of the applications. The final design and the suitability of components are determined for each site.
01 / LIQUID SYSTEMS
Solutions for pipework installation, circuit interfaces and liquid cooling connections. The choice depends on the medium, pipe material, pressure and temperature.
01.1 · PLANT ROOM
PRESS-FIT JOINTS
A mechanical pipe joint without welding.
For building pipework
Haelok provides a permanent joint for cooling and heating pipework. The press technique reduces hot work in joining and supports smooth installation even in cramped plant rooms.
01.2 · PLANT ROOM
PIPE COUPLINGS
A mechanical alternative for joining pipework.
Selected to suit the pipeline
NORMA FGR couplings join pipes in cooling and heating networks, with the coupling and seal chosen to suit the site. The solution serves both new pipeline installation and maintenance.
01.3 · CIRCUIT INTERFACES
FITTINGS AND QUICK COUPLINGS
Materials and joining methods to suit the cooling circuit.
Material options
SERTO pipe fittings connect the pipes and components of cooling circuits, for example at distribution and equipment interfaces. Radial installation makes joints easier to assemble and dismantle in confined spaces. The range includes straight fittings, elbows and tees, and other connecting parts.
SERTO quick couplings complete the system at connection points that need to be disconnected. The manufacturer’s liquid cooling applications also include data centre racks and chip-level cooling.
The fitting and seal materials are chosen according to the coolant, operating temperature, pressure and the other materials in the system. The material options should not be treated as directly interchangeable.
The materials are options across the product groups. The exact design, seals and operating limits are confirmed for the product selected.
01.4 · CIRCUIT INTERFACES
HOSE CONNECTIONS
A compact quick connector for cooling and heating hoses.
PS3 / design and materials
The NORMAQUICK PS3 Straight Connector is a straight Push & Seal plastic quick connector. The tool-free snap-fit connection and compact design make installation easier in tight spaces. An integrated O-ring seals the joint.
PS3 is designed for a mating part to the VDA guideline. The body material, stabilised against heat and hydrolysis, is designed for contact with coolant.
At data centre circuit interfaces, suitability is confirmed on the basis of the coolant, pressure, temperature, hose and mating part. The applications stated by the manufacturer are vehicle cooling and heating lines.
The PS3 product data do not specify the connector as a clean-break dry coupling. How the circuit is shut off and disconnected is designed to suit the application.
01.5 · SERVER RACK
CLEAN-BREAK QUICK COUPLINGS
A controlled connection for rack liquid cooling.
CG-C / key technical data
CG-C is a clean-break coupling system mounted directly into the customer’s structure. Valves that close on both sides minimise residual leakage on disconnection and reduce air ingress into the circuit on connection.
The manufacturer’s applications include rack cooling units in data centres. The design is also suitable for blind mating, that is, connecting without a direct line of sight.
*Depending on the material. Seals are chosen according to the medium and operating temperature. Suitability for glycol-based fluids and connection under residual pressure are confirmed separately.
02 / POWER SYSTEMS
Strong fastening. A controlled cable route.
For supporting power cables and mechanically restraining short-circuit forces.
Cable cleats support cables and hold them in place in a cable tray system. Their task is to restrain cable movement, including under the electromechanical forces caused by a short circuit.
A separate system for power distribution: Cable Cleats are cleats for power cables, not fittings for liquid pipework.
Short-circuit withstand and cleat spacing – what does sizing take into account?
In the brochure’s electromechanical force tests, the cable outside diameter is 35 mm: a 180 kA peak current at 300 mm cleat spacing (clause 9.5.2) and a 125 kA peak current at 600 mm cleat spacing (clause 9.5.3). These are values for the stated test set-up, not general sizing values for every installation.
Selection is based on the cable outside diameter, the single/trefoil formation, the cable tray, conductor spacing, short-circuit current and cleat spacing. Peak current (Ip) and RMS value must be kept apart.
Source: NORMA Stainless Steel Cable Cleats, 2023 product brochure supplied by the user.
TECHNICAL BENEFITS
Mechanical pipe joints reduce the need for welding. The joining method is chosen to suit the pipeline and the installation environment.
The clean-break design of CG-C minimises residual coolant leakage on disconnection and supports modular connections.
Correctly sized Cable Cleats help control the mechanical forces acting on power cables.
CUSTOMER STORIES
We picked the customer stories that use the products on this page: process industry, standby power, district heating and power generation.
All customer stories (in Finnish) ↗
“What was promised has been delivered, and for me at least that is very important with partners. We use Haelok fittings as an alternative to time-consuming hot work. Today the fittings are used not only in maintenance but also in investment projects. And there is always plenty of maintenance at our plant.”
– Jaakko Lehtinen, Group Manager, Mechanical and Equipment Maintenance, Neste Oyj, Naantali (translated from Finnish)
CUSTOMER STORY · HAELOKOn critical sites, only a 100% reliable Haelok fitting will doRead the story (in Finnish) »
CUSTOMER STORY · HAELOKVantaan Energia: shutting off the district heating network with Haelok press fittingsRead the story (in Finnish) »
CUSTOMER STORY · SERTOAurelia Turbines: the heat resistance of Serto fittings convinced the turbine makerRead the story (in Finnish) »FREQUENTLY ASKED QUESTIONS
Mechanical pipe joints suit plant room pipework: Haelok press fittings and NORMA FGR pipe couplings. Around the CDUs, SERTO fittings and quick couplings are used alongside NORMAQUICK PS3 hose connections, selected for each site. Liquid-cooled server racks call for clean-break quick couplings such as the Walther Präzision CG-C. Power cables are supported with NORMAFIX cable cleats.
Yes. A Haelok press-fit joint is a permanent mechanical joint in which the pipe and fitting form the seal, and the press technique reduces hot work. A NORMA FGR pipe coupling is another mechanical option, selected by pipe diameter and material, pressure, temperature, medium and axial forces.
A quick coupling whose valves close on both sides, minimising residual leakage on disconnection and reducing air ingress into the circuit. The Walther Präzision CG-C mounts directly into the structure. It comes in nominal sizes NW 6, 9, 12 and 16 and is also suitable for blind mating.
By the coolant, operating temperature, pressure and the other materials in the system. SERTO pipe fittings, for example, come in stainless steel, brass, aluminium, PVDF and polyamide. The materials should not be treated as directly interchangeable.
The cable outside diameter, single or trefoil formation, cable tray, conductor spacing, short-circuit current and cleat spacing. Peak current (Ip) and RMS value must be kept apart. According to the brochure, NORMAFIX is tested to IEC 61914:2015.
RAMATOR TECHNICAL SUPPORT
Tell us the application, medium, pressure, temperature and pipe size. For cable cleats we need the cable sizes, formation and short-circuit current. We will help you find the right products for the whole system.
Ramator Oy
Tierankatu 4
20520 Turku, Finland
