Technical journal · DRAGEAU Ibérica
Limescale, sludge and physical water treatment
Long, checkable guides on what happens to water inside an installation: why it scales, what that costs, what cleans it and which technology fits each case.
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Devices and comparisonsSalt softener or physical treatment: a point-by-point comparison
The two technologies solve the same problem by opposite routes: one removes calcium from the water, the other stops it bonding. We compare consumption, discharge, maintenance, space and running costs, and we also say where a softener remains the right answer.12 min read
Sludge and heatingSludge in closed circuits: why it appears and how to get rid of it
The water in a closed circuit is never renewed, so it does not have a limescale problem: it has a corrosion problem. We explain where magnetite comes from, why underfloor heating is the most delicate case, how much energy is lost and what the four available solutions really do.12 min read
Devices and comparisonsOpen and closed water circuits: the difference that changes water treatment
The difference is not whether the pipework forms a ring, but how the water interacts with its surroundings. This guide separates common site usage from ASHRAE’s hydraulic definition, resolves the cases that cause most confusion and helps prevent an open-water solution being applied to a closed circuit, or vice versa.13 min read
Limescale and hardnessWater hardness in Spain: how it is measured and what you have at home
French degrees, German degrees, ppm, mg/L of calcium carbonate: the same figure gets published four different ways, which complicates something that ought to be simple. Here are the conversions, the reference scale, an indicative map of Spain and the two reliable ways to measure your own water.10 min read
Devices and comparisonsEF-i limescale unit: the 12 questions installers actually ask
We collect the questions that come up on every site visit and answer them straight: what happens to the limescale, what maintenance to promise the customer, how it is fitted, which sizes cover each installation and what equipment it lives alongside. With the full FAQ video.13 min read
Limescale and hardnessIs hard water bad for your health? What the evidence says
Drinking hard water does not harm your health: hardness does not even appear among the parameters with a health-based limit value. We go through what the reference bodies say about the three most common worries, and point out the one thing that really does deserve attention, which is not where most people look for it.9 min read
Sludge and heatingMagnetic filter or permanent treatment: what each one actually does
Both go on the return and both promise a clean circuit, but they do not solve the same thing. One captures particles; the other acts on their ability to adhere. We compare scope, maintenance, effect on existing deposit and the cases where fitting both makes sense.10 min read
Limescale and hardnessWater treatment glossary: 60 terms explained
Water treatment vocabulary sits across chemistry, plumbing and regulation, which makes it easy to get lost. This glossary gathers the sixty terms that turn up in any quotation, datasheet or water quality report, explained without jargon and grouped by theme.14 min readNewsletter
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