Estrato: Underfloor heating system protection

At Polytherm we are constantly innovating, so that your radiant air conditioning system is as efficient as possible. For everything to work properly, your installation must be protected from sludge and ferrous particles that can damage it.


For this purpose, we offer you the Estrato, which has the following functions:

  • Air/Gas Separator

Due to the design of the upper chamber, as the fluid hits the retainer, the micro bubbles create an updraft into the chamber vault, which is then expelled through the automatic vent.

Maximum effectiveness occurs at the beginning of heating when gaseous solubility is minimal. 

  • Suspended solids separator

As the fluid velocity decreases, and collides with the retainer, the suspended solids precipitate into the lower chamber and are removed by opening the drain valve.

Generally, the element to be protected is the boiler, so it must be installed in the heating return circuit. 

  • Magnetic separator

It is made with a high-performance neodymium magnet that captures the ferric residues (magnetite). To remove these residues, it is necessary to stop the circulation of the fluid by closing the general shut-off valve, remove the magnet from the sheath by pulling it outwards and the accumulated residues fall into the lower chamber and are eliminated through the drain valve.

  • Cleanliness

To remove the impurities deposited in the retainer, simply turn the drain cock 180° several times and this movement will loosen the particles deposited in the retainer. 


The installation on our underfloor heating manifolds is quick, as it is done with a simple fixing fork. 

All of this ensures that your underfloor heating installation is always ready and that you avoid all kinds of breakdowns, both in the installation itself and in the external elements, such as boilers, etc.

In addition, our ESTRATO FILTER is made of Polyphenylsulphone, making it a recyclable and long-lasting product.

Contact us for more information!



An efficient building