Corrosion and Limescale Prevention Systems

Corrosion in closed heating and cooling systems is primarily driven by dissolved oxygen, pH swings, and high electrical conductivity. Swiss-manufactured Elysator SorbOx® and Elysator Trio systems eliminate the need for hazardous chemicals or recurring inhibitors by using high-purity sacrificial magnesium anodes to permanently scavenge dissolved oxygen via spontaneous electrochemical reactions.

Simultaneously, the reaction gently stabilizes water pH in the ideal 8.2–10.0 range, discharges microbubbles and trapped gases, and captures suspended magnetite and sludge particles through a high-flux magnetic filter. This technology prolongs the lifespan of boilers, aluminum and stainless steel heat exchangers, and underfloor circuits by decades.

Conventional ion-exchange water softeners consume tons of salt annually, waste substantial backwash water, and exacerbate corrosion risks through sodium discharge. Dropson EMI (Electro Magnetic Impact) technology represents a revolutionary, maintenance-free physical water conditioning alternative. As water passes through its factory-calibrated vortex treatment chamber, it is subjected to high-frequency electromagnetic impacts.

This impact transforms dissolved calcium and bicarbonate ions into microscopic, non-adherent aragonite crystals rather than stubborn calcite scale. Aragonite particles cannot adhere to heating elements, plate heat exchangers, or pipe walls, washing harmlessly through the system with the water flow. 24/7 protection with zero salt, zero chemicals, and zero water waste.

Leading manufacturers of modern condensing boilers and heat pumps (such as Viessmann) explicitly condition equipment warranties on filling water meeting VDI 2035 and SWKI BT 102-01 standards. Raw tap water contains chlorides, sulfates, and hardness minerals that provoke pitting corrosion and thermal stress fractures in thin-walled heat exchangers.

PUROTAP® and H2O DESAL® mobile resin-based and reverse osmosis units extract virtually all dissolved salts and minerals from raw water, lowering conductivity below < 10 µS/cm. This guarantees total compliance and optimal heat transfer for both initial system fills and automated top-ups.

A limescale layer of merely 1 mm on heat transfer surfaces increases energy consumption by 10%, while a 3 mm layer inflates costs by 30%. The Dropson EMI 7500 / 8000 / 9000 industrial range and high-volume Elysator H2O Guard 60v units protect plate heat exchangers, evaporative cooling towers, and chillers from scaling and corrosion clogging.

In addition to arresting new scaling, Dropson gradually dissolves pre-existing scale incrustations. By eliminating porous scale beds, it prevents the harboring of Legionella pneumophila and biofilm colonies, ensuring sanitary compliance in hotels and hospitals.

For older systems suffering from decades of uninhibited operation, cold radiators, jammed circulation pumps, and choked flow due to magnetite sludge, Sanol® H-15 and Sanol® Express provide gentle, pH-neutral cleansing without harming aluminum or synthetic piping materials.

Utilizing the Sanomat Berger S-20 high-flow dual-direction reversing pump unit, mobilized sludge and scale debris are purged entirely from the network. Once clean, installing Elysator sacrificial anodes or Dropson EMI units ensures permanent protection and restores initial thermal performance.