The proportional polyphosphate dosing system DOSAPROP MIGNON PLUS is a reduced dimensions anti-scale filter, 5”M height, made for applications at the point of use (water heaters).

Equipped with a particular suction device based on the Venturi effect, the anti-scale water filter DOSAPROP MIGNON PLUS is capable of releasing a proportional quantity of polyphosphate based on capacity and it is such that it blocks limescale deposits through a conditioning effect on carbonates preventing them from depositing onto pipes and heaters.
It’s available in 2 main version with brass IN/OUT size 1/2" BSP:
- Model 3P with polyphosphate loose crystals and model 3P HA with polyphosphate crystals cartridge
- Model 2P with polyphosphatebloose crystals and model 2P HA with polyphosphate crystals cartridge
The DOSAPROP MIGNON PLUS polyphosphate crystals dosing system is accompanied by spare parts and accessories that make it possible for the product to always supply best performance.

Main products

Anti-scale unit with Venturi effect for proportional dosage of polyphosphate
Models Mignon Plus in 2 or 3 pieces
IN/OUT female 1/2", connections
Thread with BSP brass insert
5”M height
Head: Reinforced polypropylene
Bowl: SAN
Polyphosphate refill: polyphosphate loose crystals or HA polyphosphate crystals cartridge
Maximum operating temperature: 35°C (113° F)
Maximum operating pressure: 8 bar (116 psi)
Maximum water hardness 50°F (500 ppm CaCo3)
Atoxic materials, suitable for potable water
Compact dimensions, reduced volume
Designed for point of use applications (water heaters)
The polyphosphate dosing is proportional to the water flow
Better thermal efficiency and systems protection
Lower maintenance costs
Restoration of old systems with reduction of limescale and corrosion in progress
Easy and quick maintenance

Accessories on demand

-L- spanner for Mignon 3P
-M- spanner for Mignon 2P
-LUBRIKIT- lubricant for housing o-ring

video gallery

Installation and use of anti-scale water conditioning polyphosphate crystals dosing systems