GEL Zerocal+ PRO LINE 1/2 cod. 105.081.20
- Active Protection: Proportional dosage of anti-limescale and anti-corrosion product to preserve heat exchangers and water circuits.
- Ultra-Compact Design: The ergonomic shape and minimal dimensions make it ideal for under-boiler installations in extremely small spaces.
- Integrated By-Pass System: Allows you to refill the descaling liquid without having to close the main water shut-off valve.
- Reliable Technology: The patented submersible pump guarantees operation even after periods of non-use and does not require an electrical power supply.
- Energy Saving: By keeping the exchanger clean, it prevents increased gas consumption linked to limescale deposits (1 mm of limescale = +10% consumption).
Extend the life of your boiler and optimize consumption with Gel Zerocal+ PRO proportional technology.
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Zerocal+ PRO Gel 1/2": The Technological Shield against Limescale
The water in our systems contains calcium and magnesium salts, which precipitate with the heat of the boiler, forming limescale. The Zerocal+ PRO Line Gel Limescale Dispenser (code 10508120) chemically intervenes by precisely and proportionally dosing the ZeroCal+ DOSE liquid. This food-grade product creates a microscopic film on metal surfaces, preventing limescale from depositing and protecting internal components from galvanic corrosion.
Why install a Zerocal+ PRO instead of a traditional salt dispenser?
The Zerocal+ PRO Linea model offers unique functional advantages for the user and the installer:
- Easy Maintenance: Thanks to the easy refill system, simply unscrew the tank and pour in the ready-to-use liquid. No special wrench is required, and the water flow is uninterrupted.
- Hydrodynamic Operation: Uses water pressure for dosing; requires no batteries or electrical connections, eliminating any risk of electronic failure.
- Precision and Safety: Unlike powder or grain dispensers, the liquid guarantees a constant concentration of polyphosphates (< 5 ppm), in full compliance with drinking water regulations.
- Immersion Pump Technology: The pump is not damaged if the liquid runs out, allowing the device to return to work as soon as it is refilled.
Professional Technical Data Sheet
| Attacks | 1/2" - 1/2" Male/Male |
| Operating pressure | 1.3 ÷ 6 bar |
| Average charging autonomy | Approximately 11 m³ of water |
| Room temperature | 5°C - 50°C |
Installation and charging tips
Zerocal+ PRO is installed on the boiler's cold water inlet pipe. Thanks to the in-line connections, installation is quick. When the liquid in the transparent tank is empty, simply unscrew the container, fill it with the included Zerocal+ DOSE refill (or purchased separately), and screw it back on. The system will resume dosing automatically.
Frequently Asked Questions
Is water treated with Zerocal+ PRO drinkable?
Yes. The dosed product is formulated with food-grade raw materials compliant with Ministerial Decrees 174/2004 and 25/2012, guaranteeing the safety of water for hygienic-sanitary and food use.
What happens if I forget to refill the liquid?
The boiler will continue to operate normally, but will lose its limescale protection. The Zerocal+ PRO's internal mechanical pump is designed to withstand damage even when running dry for extended periods.
Can I also install it for the washing machine?
Absolutely. In addition to boilers, Zerocal+ PRO is excellent for protecting electric water heaters, washing machines, and dishwashers, reducing wear on heating elements and improving the effectiveness of detergents.

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