iDose 3.5 range
A volumetric dosing pump, Idromix® runs solely on the driving force of the water flowing through it — no electricity.
The set dosage remains constant whatever the variations in flow and pressure.
Key benefits
A unique design, improved performance
10 to 3,500 l/h
Practical, compact and high-performing: the ideal dosing pump for motive water flow rates from 10 l/h up to 3,500 l/h, with reduced pressure loss at high flow.
Guaranteed mixing quality
The product is injected at the inlet and mixed inside the pump: the outgoing solution is homogeneous from the very first litre.
Chemical resistance as standard
Natural polypropylene pump body and a motor with no metal parts: the iDose 3.5 withstands the most aggressive products.
Simplified maintenance
Fewer parts, tool-free disassembly and a dosing part interchangeable between models across the range.
“Autolock” adjustment
Simple, precise and secure dosage adjustment: the chosen position is held automatically, with no ring or nut to tighten.
Built-in ON/OFF
Stop product injection without shutting off the water, standard on all models. A translucent “Vision” version even lets you see the motor stroke.
Adjustment
Precise, secure, and true to reality
The dosage is set simply by turning the adjustment nut, with the pump depressurised, until the ring lines up with the desired graduation. The “autolock” system automatically holds the chosen position — with no extra ring or nut to tighten — and the markings on the nut make it easy to return to an even finer setting.
The indicated dosage corresponds to the actual concentration of product in the output solution. Example: a 7% setting gives a 7% solution, i.e. 7 volumes of product and 93 volumes of water to obtain 100 volumes of solution.
Available versions
| Model | Dosing range | Connections | Colours |
|---|---|---|---|
| iDose 3.5 DA 022 | 0.2% to 2% | 3/4″ BSP (M 20×27) or 1″ BSP (M 26×34) | translucent or blue (3/4″) · green (1″) |
| iDose 3.5 DA 055 | 0.5% to 5% | 3/4″ BSP (M 20×27) or 1″ BSP (M 26×34) | translucent or blue (3/4″) · green (1″) |
| iDose 3.5 DA 110 | 1% to 10% | 3/4″ BSP (M 20×27) or 1″ BSP (M 26×34) | translucent or blue (3/4″) · green (1″) |
As standard: Viton FKM seals (other options: contact us). Option: viscosity kit for all models. The indicated dosage corresponds to the concentration of product in the solution at the pump outlet.
Technical specifications
| Operating water flow rate | from 10 l/h to 3,500 l/h |
| Operating pressure | from 0.3 bar to 6 bar |
| Water temperature | 40 °C max |
| Dosing accuracy | ± 5% of full scale |
| Pressure loss | from 0.3 to 2 bar |
| ON/OFF function | built-in |
| Inlet / outlet connections | 3/4″ BSP or NPT (M 20×27) · 1″ BSP (M 26×34) |
| Centre-to-centre distance | 16 cm |
| Motor | differential piston, 0.62 litre displacement |
| Product injection | internal at the inlet, mixing inside the pump |
| Suction valve | clip-on fitting, easy to clean |
| Self-priming pump | yes |
| Operation without product | possible |
| Max product viscosity | 800 cSt (viscosity kit above 400 cSt) |
| Suction height | 2.5 m max |
| Suction length | 4 m max |
Materials
- Housing: natural polypropylene (glass-fibre free)
- Motor: polyamide, polypropylene, polyethylene, PEEK
- Dosing part: polypropylene, polyethylene, PVDF
- Suction hose: PVC · Seals: Viton / FKM
Dimensions
- Connection centre-to-centre distance: 16 cm
- Package dimensions: 51 × 17.5 × 14.5 cm
- Package weight: 2 kg
Installation and maintenance
- Comply with the regulations in force in your country when installing the Idromix on a drinking water network
- Install an upstream filter (100 microns)
- Fit protection against excess flow and water hammer
- Set the dosage with the pump depressurised
- Rinse your Idromix regularly with clear water
- Replace the seals at least once a year
For any installation advice, contact us — and see assembly and maintenance in pictures on our Video Tutorial page.
Which iDose 3.5 for your application?
Livestock farming, horticulture, industry: explore the applications by market, or tell us about your installation.

