Eisele Liquidline: Koelwaterkoppelingen in ontzinkingsbestendig messing
Liquidline was developed for one specific problem: standard brass does not hold up in cooling water. Under the influence of water quality, temperature and time, dezincification occurs: the zinc dissolves out of the alloy and what remains is porous and brittle. The coupling looks normal on the outside and then fails without warning.
In a laser cutter, a welding robot, a power transformer or a liquid-cooled server rack, that means water damage in the worst possible place. That is why Liquidline uses dezincification-resistant brass combined with durable seals, designed for long-term contact with aqueous media in closed circuits.
Applications
- Laser technology: cooling of sources, optics and cutting heads
- Welding technology: cooling of torches and welding robots
- Transformatoren: koelcircuits in vermogenselektronica
- Server cooling and data centres: liquid-cooled racks and components
- Injection moulding and mould technology: temperature control of moulds
- Machine and process cooling: machine tools, drives, heat exchangers
What you can build with this line
Push-in fittings for cooling water: fast installation in straight and elbow versions, designed for long-term contact with aqueous media.
Screw fittings: fixed connections for permanent circuits under mechanical load.
Distribution blocks and manifolds: for compactly splitting a cooling circuit into multiple branches, keeping your media supply clear.
Tubing and accessories: matching tubing for cooling and welding applications, plus blanking plugs, bulkheads and mounting parts.
Technical framework
| Material | Dezincification-resistant brass |
| Media | Cooling water, aqueous media, water-glycol mixtures |
| Seal | Durable elastomers, designed for aqueous media |
| Connections | G thread, metric thread |
| Designed for | Closed cooling circuits |
Why dezincification-resistant brass?
Dezincification is an insidious process. It starts as soon as brass is in long-term contact with water and accelerates at higher temperatures, with certain water treatments and with stagnant water. The treacherous thing is that it happens on the inside: nothing is visible on the outside until the moment of failure.
Dezincification-resistant alloys are formulated so that the zinc does not leach out selectively. For a cooling circuit that has to run for years, this is not a luxury but a basic requirement, especially when a leak would hit electronics, optics or a mould.
Frequently asked questions
What is dezincification and why is it a problem?
Dezincification is a form of selective corrosion in which zinc dissolves from a brass alloy. The remaining material is porous and loses its strength. Because the process runs from the inside, it is not visible from the outside until the coupling fails.
Can I use ordinary brass couplings for cooling water?
You can, but the risk of dezincification is real and increases with temperature, operating time and water quality. For circuits that need to function for years, we recommend dezincification-resistant material.
Is Liquidline suitable for server cooling and data centres?
The line is developed for closed cooling circuits, including cooling of electronics and power components. Share your coolant, pressure level and connection sizes with us and we will check suitability for your setup.
Is Liquidline suitable for water-glycol mixtures?
The line is designed for aqueous media in closed circuits. For specific coolants or additives, we recommend sharing the composition with us so we can check the material and seal combination.
What is the difference from Basicline?
Basicline is intended for compressed air and gases in standard brass. Liquidline uses dezincification-resistant brass and seals designed for long-term water contact.
