GEL: MiniDOS Dosers, Filters and Limescale Removers for Systems

GEL: Dosing Systems, Filters and Softeners for Water Treatment

GEL Srl is a leading Italian company in the design and manufacture of limescale prevention, filtration, and water softening devices. The GEL range stands out for the reliability of its proportional dosing devices and robust filters, ensuring maximum protection for boilers and hydraulic circuits, in compliance with current drinking water regulations.

The most requested GEL solutions

  • **Anti-scale dosing pumps (MiniDOS):** Mechanical and electronic proportional dosing pumps for the chemical conditioning of sanitary water.
  • **Filtration:** Self-cleaning filters, cartridge filters, and magnetic dirt separators to remove sand and rust.
  • **Water softeners:** Volumetric ion exchange machines to completely eliminate water hardness.

MiniDOS: The Proportional Dosing Pump

**Problem:** An imprecise dispenser wastes product (cost) or, worse, does not dose enough polyphosphate, allowing limescale to build up in the boiler, voiding the warranty.

**Solution:** MiniDOS GEL dispensers (often combined with their exclusive line of salts) ensure a constant dosage proportional to the volume of water passing through. This ensures your boiler is protected at all times, scrupulously respecting the legal limits (DM 25/2012) for human consumption.

GEL Filters and Sample Collection

To protect against sediment, GEL offers robust filters often equipped with sampling valves. This feature is essential for professionals who need to analyze water before and after treatment, ensuring proper calibration of the dispenser or softener.

💧 Limescale Remover or Water Softener?

If you need to protect **only the boiler** and appliances from scaling, the **MiniDOS Dosator** is the most economical solution.
If you want to completely eliminate limescale stains from glass and taps, making the water "soft" for laundry and skin, you need to install the **GEL Water Softener** at the main water inlet.

Gel for water treatment

Subcategories

Volumetric Gel Water Softeners: Stop Limescale in Your Home

Gel softeners

GEL: Spare Parts, Polyphosphate Refills, and Water Analysis Kits

Other GEL products

GEL: Chemical Conditioners, Inhibitors and System Cleaning

Gel conditioners

GEL: Magnetic Dirt Removers and Boiler Condensation Neutralizers

Dirt separators - Gel neutralizers

GEL: Inhibited Chemical Descalers and Boiler Washing

Gel descaling

Gel Disinfectants: Sanitizing Systems and Water Softeners

Gel disinfectants

Polyphosphate Gel Dispensers: MiniDOS Proportional Anti-Limescale

Gel dispensers

Gel Water Filters: Sand Traps, Cartridges, and Self-Cleaning

Gel Filters

GEL: Washing Liquids and Corrosion Inhibitors for Heating

Cleaning and protection of Gel systems

Reverse Osmosis GEL: Under-Sink Water Purifiers

Reverse Osmosis Gel

Gel acquaclick 4.0 undersink refiner cod. 102.350.00
-27%

Gel acquaclick 4.0 undersink refiner cod. 102.350.00

Available
Gel acquaclick 4.0 undersink refiner cod. 102.350.00
Reverse osmosis under sink refiner. The only one with the remote control that avoids the double tap.
€1,460.73
€2,001.00
Gel acquaclick 4.0 UV undersink refiner cod. 102.350.50
-27%

Gel acquaclick 4.0 UV undersink refiner cod. 102.350.50

Available
Gel acquaclick 4.0 UV undersink refiner cod. 102.350.50 Reverse osmosis under sink refiner with UV lamp. The only one with the remote control that avoids the double tap.
€1,622.75
€2,222.95
GEL Zerocal+ PRO LINE 1/2 cod. 105.081.20
-45%

GEL Zerocal+ PRO LINE 1/2 cod. 105.081.20

Available

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.
€57.87
€105.23
GEL Zerocal+ PRO DIMA 1/2 cod. 105.080.20
-45%

GEL Zerocal+ PRO DIMA 1/2 cod. 105.080.20

Available

Adjustable Connections (Template): Designed with 90° or in-line connections, it adapts to any configuration of under-boiler pipes, ideal for replacements and new systems.
Acoustic Refill Signal: The PRO model includes an electronic sensor that alerts you with an acoustic signal when the descaling liquid is empty.
Total Protection: Proportional, millimetric dosage that prevents limescale build-up and corrosion of heat exchangers.
Uninterrupted Refilling: The cartridge system allows you to replace the liquid without having to turn off the main water supply to the home.
Certified Efficiency: Keeps the boiler in Class A, reducing fuel waste and extraordinary maintenance costs.

The universal solution for every boiler: Zerocal+ PRO DIMA adapts to your spaces and alerts you when it needs maintenance.
€65.15
€118.45
GEL Zerocal+ PRO DIMA L VERTICAL 1/2 cod. 105.080.40
-38%

GEL Zerocal+ PRO DIMA L VERTICAL 1/2 cod. 105.080.40

Available

Optimized Vertical Layout: Specifically designed for installations on vertical or elbow (L) pipes, solving any space problems under the boiler.
Proportional Active Protection: Millimetric dosage of ZeroCal+ DOSE to inhibit the formation of limescale and prevent galvanic corrosion.
Zero Hydraulic Stress: The 1/2" F connections allow for a solid assembly that is perfectly aligned with the boiler outlets.
Unchanged Efficiency: Submersible pump technology that guarantees constant dosing even after months of system inactivity.
Smart Refill: No need to turn off the main water supply; the integrated bypass system allows for maintenance in seconds and without tools.

Gel precision meets vertical versatility: protect your boiler even where space seems limited.
€73.44
€118.45
GEL Zerocal+ PRO DIMA DUAL UNIVERSAL 1/2 cod. 105.080.50
-45%

GEL Zerocal+ PRO DIMA DUAL UNIVERSAL 1/2 cod. 105.080.50

Available

Maximum Adaptability: Thanks to the Universal attachments and the adjustable template, it can be installed in just a few minutes even in the most critical spaces.
Dual Technology: The only dispenser that allows you to choose between Zerocal DOZ liquid refills or powder/sachet refills.
Refill Signal: Equipped with an acoustic and visual (LED) warning to remind you exactly when to replace the descaler.
Space-saving Design: Ultra-compact dimensions designed to disappear under modern condensing boilers.
Guaranteed Efficiency: Total protection against limescale and corrosion, maintaining the thermal output of the system unchanged.

The only dispenser that doesn't fear any hydraulic configuration: extreme flexibility and intelligent technology in a single gesture.
€65.78
€119.60
GEL Zerocal+ SENSOR LINE 1/2 cod. 105.079.00
-27%

GEL Zerocal+ SENSOR LINE 1/2 cod. 105.079.00

Available

Sensor Technology: An audible signal and a visual LED alert you as soon as the battery is low.
Inline Installation: Straight design optimized for 1/2 inch linear piping, ideal for quick installations.
Proportional Efficiency: Releases the exact amount of descaler based on the water flow, avoiding waste.
Total Protection: Blocks the formation of limescale and prevents corrosion inside the boiler.
Modern Design: Compact and functional structure that fits perfectly under any wall-mounted boiler.

Don't risk leaving your boiler unprotected: Zerocal Sensor warns you before limescale becomes a problem.
€121.73
€166.75
GEL Zerocal+ SENSOR TEMPLATE 1/2 cod. 105.078.00
-27%

GEL Zerocal+ SENSOR TEMPLATE 1/2 cod. 105.078.00

Available

Rotatable flange: The rotatable flange allows for effortless installation on horizontal, vertical or inclined pipes.
Smart Alarm: Built-in acoustic signal and LED alert you when the descaling liquid is running low.
Zerocal technology: High-precision proportional dosing that neutralizes limescale while preserving the drinkability of the water.
Ultra-Compact Design: Designed to disappear under the boiler, ideal for apartments with limited technical space.
Guaranteed Savings: Reduces gas consumption by keeping the exchanger clean and preventing costly repairs.

Choose the peace of mind of a dispenser that adapts to your space and alerts you when it needs you.
€133.06
€182.28
GEL Zerocal+ SENSOR TEMPLATE L VERTICAL 1/2 cod. 105.078.60
-27%

GEL Zerocal+ SENSOR TEMPLATE L VERTICAL 1/2 cod. 105.078.60

Available

"L" configuration: Specific design for vertical pipes, perfect for under-boiler installations in extremely tight spaces.
Smart Sensor Alert: No need to visually check; an audible signal and LED light alert you when the liquid is empty.
Adjustable Connection: The Dima flange allows for millimetric alignment with the pipes, making assembly easier even for non-experts.
Certified Protection: Proportional dosage of food-grade polyphosphates that blocks limescale and prevents premature corrosion.
Savings on your bill: Keeps the exchanger clean for consistently efficient heat exchange and reduced gas consumption.

Zerocal's intelligent technology, now optimized for the most complex vertical installations.
€133.06
€182.28
GEL Dosaphos 200 1/2 cod. 105.010.60
-27%

GEL Dosaphos 200 1/2 cod. 105.010.60

Available

Total Protection: Prevents the formation of limescale and protects hydraulic circuits from corrosion.
Energy Efficiency: A clean exchanger reduces gas consumption and extends the life of the boiler.
Universal Refill: Designed for the Dosaphos 200 dispenser and compatible with 1/2 inch Gel models.
Food Grade: Formulated with high-quality natural salts, safe for drinking water throughout the home.
Regulatory Compliance: Complies with current laws on water treatment in the sanitary circuit.

Stop limescale before it stops your boiler: the simple and effective solution for long-lasting comfort.
€66.32
€90.85
GEL Dosaphos 200 fast 1/2 cod. 105.010.70
-27%

GEL Dosaphos 200 fast 1/2 cod. 105.010.70

Available

Active Protection: Proportional polyphosphate dispenser that prevents limescale from depositing on boilers and exchangers.
Patented Fast System: Thanks to the orientable connection and integrated flange, installation and maintenance are very quick.
Energy Efficiency: By keeping the heating circuits clean, you reduce gas consumption and extend the life of your system.
Space-saving design: Compact size ideal for installation in small spaces under the boiler.
Ready-to-use kit: Includes the first refill and accessories for immediate assembly.

Choose Gel technology to protect your boiler and avoid limescale damage.
€69.26
€94.88
GEL Dosaphos 250 1/2 cod. 105.030.80
-55%

GEL Dosaphos 250 1/2 cod. 105.030.80

Available

Maximum Flexibility: Equipped with an adjustable attachment (Template) for easy installations on both vertical and horizontal pipes.
Total Protection: Prevents limescale precipitation and protects exchangers and hydraulic circuits from corrosion.
Minimum Space Requirement: Specifically designed to fit in tight spaces under wall-mounted boilers.
Certified Efficiency: Maintains boiler performance over time, reducing gas waste and technical interventions.
Ready to use: The package includes the complete dispenser and the first refill of polyphosphate.

Solve your space problem without giving up the best limescale protection on the market.
€49.94
€110.98
GEL Dosaphos 250 fast 1/2 cod. 105.030.90
-27%

GEL Dosaphos 250 fast 1/2 cod. 105.030.90

Available

Patented Fast System: Immediate, clean and waste-free refill replacement thanks to the ready-to-use bottles.
360° Adjustable Connection: The Dima flange allows installation on horizontal, vertical or inclined pipes.
Ultra-Small Footprint: Designed to disappear behind the boiler frame, ideal for apartments and tight spaces.
Double Protection: Blocks the formation of limescale and inhibits corrosion of the metal parts of the boiler.
Water Efficiency: Keeps the exchanger clean, ensuring immediate hot water and reducing gas consumption.

The ultimate solution for those seeking maximum technology and simplicity in boiler maintenance.
€83.95
€115.00
GEL Dosaphos PL 250 fast 1/2 cod. 105.060.10
-55%

GEL Dosaphos PL 250 fast 1/2 cod. 105.060.10

Available

Technopolymer Body: Made of high-strength engineering plastic to ensure durability and lightness during installation.
Adjustable Connection: The Dima flange allows for mounting on vertical, horizontal or diagonal pipes with extreme ease.
Fast Technology: Clean and instant refill via sealed bottles, without any contact with the product.
Anti-Limescale Efficiency: Precise proportional dosing that prevents scaling and reduces boiler energy consumption.
Complete Kit: Includes everything you need for immediate commissioning under your wall-mounted boiler.

The intelligent solution that combines the versatility of top-of-the-range models with the lightness of modern materials.
€35.71
€79.35
GEL Dosaphos DIMA 1/2 cod. 105.050.75
-50%

GEL Dosaphos DIMA 1/2 cod. 105.050.75

Available

Total Adjustability: Special rotating flange that allows installation on horizontal and vertical pipes without hydraulic modifications.
Brass Body: Head made of nickel-plated brass for maximum mechanical resistance and durability.
Proportional Dosing: Precise release of polyphosphates to inhibit limescale and protect the boiler from corrosion.
Compact Size: Specially designed for "under-boiler" mounting where space is limited.
Energy Efficiency: Prevents clogging of the exchanger, keeping gas consumption and maintenance costs low.

The robust and flexible solution to ensure a long life for your boiler, even in the most complex systems.
€67.85
€135.70
GEL Dosaphos vertical template 1/2 cod. 105.050.95
-27%

GEL Dosaphos vertical template 1/2 cod. 105.050.95

Available

Optimized Vertical Design: Specifically designed for installation on vertical pipes, reducing lateral clearance under the boiler.
Nickel-plated Brass Body: Maximum strength and pressure resistance for a device designed to last for years.
Anti-scale protection: Proportional dosage of polyphosphates which prevents limescale from crystallizing and damaging the exchanger.
Dima System: The adjustable flange guarantees perfect assembly even in the presence of millimetric spaces.
Simple Maintenance: Uses traditional powder or sachet refills, ensuring low running costs.

The safe choice for those looking for a robust, reliable vertical dispenser that does not compromise on the quality of the materials.
€103.68
€142.03
GEL Zerocal+ PLANT 3/4 cod. 105.077.10
-27%

GEL Zerocal+ PLANT 3/4 cod. 105.077.10

Available

Comprehensive Protection: Designed to be installed at the entrance to the home, it protects the boiler, washing machines and taps.
Intelligent Sensor: Unique in its kind, it warns you with a visual and acoustic signal when charging is about to run out.
3/4" connections: Ideal for higher water flow rates, ensuring constant pressure at all draw-off points.
Zerocal Technology: Ultra-precise proportional dosing system that maximizes the effectiveness of the descaling liquid.
Zero Stress Maintenance: Ergonomic design for quick, mess-free, tool-free bottle changes.

Protect every pipe and appliance in your home with the intelligence of the Zerocal Plant system.
€164.96
€225.98
GEL Dosaphos 600 PLANT 3/4 tails. 105.070.10
-27%

GEL Dosaphos 600 PLANT 3/4 tails. 105.070.10

Available

Centralized Protection: Installed at the water inlet, it protects the entire home network, from the boiler to the shower mixers.
High Flow (3/4"): Designed to handle high water flows without causing pressure drops in the system.
Nickel-Plated Brass Body: Ultra-robust and professional structure, resistant to high operating pressures and thermal shocks.
Precision Mechanical Dosing: Proportional system that guarantees the optimal release of food-grade polyphosphates.
Easy Maintenance: High-strength transparent glass for instant monitoring of the charge level.

The ultimate solution for those who want to protect more than just their boiler, but also every tap in their home.
€115.43
€158.13
GEL Dosaphos 700 PLANT code. 105.070.00
-27%

GEL Dosaphos 700 PLANT code. 105.070.00

Available

Superior Flow Rate: 1" connections to handle large volumes of water without pressure loss.
Solid Brass Body: Nickel-plated brass head designed to withstand heavy operating pressures and last for decades.
Total System Protection: Prevents limescale and corrosion throughout the entire water system, protecting boilers, water heaters and taps.
Easy Monitoring: Transparent, high-strength SAN vessel to check polyphosphate levels at a glance.
Mechanical Proportional Dosing: Ensures the constant introduction of the correct quantity of product, optimising consumption.

The power and robustness of brass at the service of your system: uncompromising protection for large users.
€164.12
€224.83
GEL Dosaphos 800 PLANT 1 1/4 tails. 105.070.05
-27%

GEL Dosaphos 800 PLANT 1 1/4 tails. 105.070.05

Available

Industrial Flow: 1" 1/4 connections designed to handle high water flows in centralized systems or luxury villas.
Nickel-plated Brass Structure: Ultra-robust head to guarantee maximum mechanical seal even under heavy water stress.
Comprehensive Protection: Anti-limescale and anti-corrosion action extended to the entire water network and all heat exchangers in the building.
Larger vessel: Large refill capacity to ensure long protection intervals before the next maintenance.
Mechanical Proportional Dosing: Precision system that releases polyphosphates consistently and strictly in compliance with food use.

The ultimate solution for water treatment in large facilities: uncompromising robustness, capacity and protection.
€164.96
€225.98

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