Ydrokalk SAAS 10″ — whole-house physical scale inhibitor
Ydrokalk SAAS 10″: salt-free, power-free, chemical-free anti-scale (~87% scale reduction). Two Big Blue 10″ housings, minerals preserved. Refs ART065276, ART101390, ART101391.

Ydrokalk SAAS 10″ is a salt-free, power-free, chemical-free anti-scale system based on the SAAS technology (Scale Away Advanced System). It turns limescale into non-encrusting aragonite crystals (~87% scale reduction) without changing the water's mineral content. Format: two Big Blue 10″ housings at the point of entry, for the whole home.
Ydrokalk is DIMM's brand for physical anti-scale solutions. This sheet is intended for partner installers, resellers and distributors: it gathers the technical data, catalogue references and the arguments to relay to the end customer.
SAAS operating principle
| Aspect | Detail |
|---|---|
| Technology | Ionic polarisation / soft crystallisation |
| Composition | Stainless steel 304/316 + special alloys |
| Process | A physical field turns crystalline CaCO₃ into aragonite (neutral, non-adherent) |
| Result | Limescale stays in suspension and no longer builds up |
| Efficiency | ~87% scale reduction (vs 100% for a softener) |
| Mineral water | Preserved — no ion exchange, minerals kept |
System architecture — Ydrokalk SAAS 10″

The two Big Blue 10″ housings
| Item | Specifications |
|---|---|
| Type | Big Blue 10″ cartridge housing (standard) |
| Connections | ¾″ or 1″ BSP — inlet / outlet |
| Dimensions | Height ~250 mm, diameter 114 mm |
| Nominal pressure | 1–6 bar (optimal 2–4 bar) |
| Max pressure | 10 bar (safety) |
| Nominal flow | ~60 L/min per unit (~120 L/min in parallel) |
| Orientation | Vertical (horizontal possible with adapter) |
Internal SAAS cartridge

| Cartridge | Detail |
|---|---|
| Composition | Stainless 304/316 + alloys — generates the ionic field and transforms limescale |
| Lifespan | Unlimited (no wear, no maintenance) |
| Cleaning | Optional every 3 years (external descaling with weak acid) |
| Replacement | None — no consumable |
Ydrokalk SAAS vs salt softener
| Criterion | SAAS 10″ | Conventional softener |
|---|---|---|
| Operation | Ionic polarisation (physical field) | Ion exchange (resin + NaCl) |
| Scale efficiency | ~87% (limescale transformed) | 99% (calcium removed) |
| Mineral water | Preserved | Sodium added |
| Electricity | None | Required (220 V) |
| Salt | Zero | 15–30 kg/year |
| Waste water | None | ~20% (regeneration) |
| Maintenance | Almost none | Yearly |
| Lifespan | Unlimited (20–30 years+) | 10–15 years (resin, valve) |
| Use | Whole house (drinking OK) | Whole house |
| Certification | ACS, WRAS, ISO 9001 | ACS, NSF, CE |
Detailed efficiency
Scale reduction by area
| Area | Before | After SAAS | Benefit |
|---|---|---|---|
| Taps | Thick white deposits | ~87% less | Easier cleaning |
| Shower heads | Progressive clogging | Easier unclogging | Flow maintained |
| Water heater | Fast internal scaling | Drastic reduction | Energy savings |
| Washing machine | Accelerated wear | Lifespan +30% | Fewer breakdowns |
| Pipework | Internal narrowing | Greatly slowed | Pressure maintained |
| Dishwasher | Deposits on glass/plates | Better rinsing | Shiny dishes |
DIMM data (SAAS encyclopedia sheet): scale inhibition ~87%, pH unchanged, residual hardness kept at 100% (water keeps its raw hardness), calcium and magnesium preserved.
Installation & maintenance
Operating conditions
| Parameter | Requirement |
|---|---|
| Water pressure | 1.5–6 bar (min. 1.5 bar for efficiency) |
| Temperature | -10 to +60 °C (works on hot water) |
| pH | 6.5–8.5 (neutral to slightly alkaline) |
| Hardness | Ideal 15–40 °f (also works at extreme hardness) |
| Residual chlorine | Acceptable (stainless SAAS) |
Maintenance
| Action | Frequency | Complexity |
|---|---|---|
| Visual inspection (leaks) | 6 months | Easy |
| External descaling (weak citric acid) | Optional, 3 years | Easy |
| Cartridge change | Never | N/A |
| Pressure check | Yearly | 30 seconds |
⚠️ Stated limitation
Efficiency ~87% (vs 99% for a softener), for water up to ~40 °f. Above that (very hard water > 40 °f), prefer a softener or a SAAS + softener combination.
DIMM references — Ydrokalk SAAS 10″
| Article code | Designation | Connections | Configuration |
|---|---|---|---|
| ART065276 | PR-YDROKALK-10-KDF | 1″ BSP (I/O) | 2 × Big Blue 10″ |
| ART101390 | PR-YDROKALK2-10-APC | 1″ BSP (I/O) | 2 × Big Blue 10″ (v2) |
| ART101391 | PR-YDROKALK-10-APC | 1″ BSP (I/O) | 2 × Big Blue 10″ |
Variants: KDF = standard threaded fittings · APC = adapted fittings (confirm with your sales contact).
Full Ydrokalk range
| Range | Format | Flow | Use |
|---|---|---|---|
| Ydrokalk SAAS | 2 × 10″ | 120 L/min | Standard home |
| Ydrokalk SAAS | 2 × 20″ | 240 L/min | High flow / small community |
| Ydrokalk 2 SAAS | 2 × 10″ | 120 L/min | Version 2, improvements |
| Ydrokalk 2 SAAS | 2 × 20″ | 240 L/min | Version 2, high flow |
| Big Duo SAAS | Variants | Per config. | Alternative assembly |
Selling points for the end customer
- Zero electricity — no extra bill, works during outages, ideal in rural areas.
- Zero salt — no bags to store, no brine discharge, ~€300–500/year saved (vs softener), unsalted water.
- Zero maintenance — no cartridge change, no salt tank, no yearly service.
- Minerals preserved — calcium and magnesium kept, better taste, no added sodium.
- Unlimited lifespan — no consumable, 10-year warranty (often 20 years+ in practice).
- Fast install — plug & play, stainless hoses, 1–2 hours max.
- Stated limit — ~87% vs 99%; for water > 40 °f, propose a softener or a SAAS + softener combo.
Compatibility & integration
Combines with: carbon filter (taste/odour), reverse osmosis (PFAS, nitrates), UV sterilisation (bacteria/viruses), conventional softener (very hard water > 40 °f). Does not replace reverse osmosis (PFAS, nitrates, dissolved heavy metals) nor carbon filtration.
Documentation
Downloads: Ydrokalk brochure (PDF) · Ydrokalk catalogue (PDF). Full datasheets and references available from your DIMM sales contact.
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