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Monarch Scaleout Inhibitor SI-22

Monarch Scaleout Inhibitor SI-22

Regular price £328.99 GBP
Regular price Sale price £328.99 GBP
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A superior conditioning performance thanks to a unique, food-grade catalytic core treatment method. Protecting water outlets and household appliances such as boilers, showers, hot water tanks, washing machines, dishwashers and kettles.


  • Leading 10 year parts warranty for complete peace of mind.
  • World leading technology since 1973 – utilising a unique catalytic core within a quality stainless steel body.
  • Water remains treated for up to 3 months.
  • Prevents new and removes existing scale from your system.
  • Self cleaning action to keep the media core working at optimum efficiency.
  • No maintenance – fit and forget.
  • No earth bonding is required.
  • Designed and made in the UK with full WRAS Approval.
  • Installation is straightforward and can be connected to any type of pipe – copper, pvc, galvanized, etc.
  • Can be installed vertically or horizontally.
  • Reduces energy bills and prolongs equipment life.


How it works?

3 stages to the ultimate conditioned water:

1. A unique aerator screen which optimises turbulation and helps separate the bicarbonate (which causes scale).

2. Pioneering spiral alloy core combined with innovative surface chemistry composition to create a powerful catalytic reaction and long-lasting treatment.

3. The result is the creation of aragonite crystals which flow freely through the system without leaving hard scale deposits.



  • 180 x 44 LxØ (mm)
  • Number of people: 4 – 5 (22mm or 28mm pipework)
  • Optimum Flow Range (lpm): 18 – 41
  • Max Pressure (bar): 16*
  • Op. Temp (°C): 2 – 80
  • Connection: 3/4” fbsp
  • * We recommend a PLV for all water pressures over 5 bar.


WRAS Approved Product     MADE IN BRITAN

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