Monarch SI-15 Scaleout Inhibitor 15mm WRAS Approved Catalytic Core for Boiler and Shower Protection
🚚 Delivery in up to 5 working days (may be sooner) on this product
The Monarch SI-15 Scaleout Inhibitor uses a patented catalytic core to prevent limescale in boilers, showers, and appliances—WRAS approved and designed for 15mm pipework.
- All prices include VAT
- Estimated Delivery: For most items (over 99% of our products), orders placed before 3pm on working days will be dispatched the same day with our Fast DELIVERY 1st class service. For the rare items not immediately in stock, dispatch may take 1-3 working days after receiving your order. If your order cannot be dispatched the same day, we will notify you via email.
The Monarch SI-15 Scaleout Inhibitor delivers leading limescale prevention through a unique catalytic core housed in a durable stainless steel body. Designed for use with 15mm pipework, it provides ongoing protection for boilers, hot water systems, showers, kettles, and other household appliances.
This WRAS-approved unit features self-cleaning action, ensuring the media core performs at maximum efficiency throughout its lifespan. Designed for homes with 1–4 occupants, it operates without chemicals, requires no maintenance, and is suitable for copper, PVC, or galvanized pipe installations.
Manufactured in Great Britain, the SI-15 offers long-term scale protection with a 10-year parts warranty, making it a trusted choice for household water conditioning.
Key Features
• Patented Catalytic Core – World-leading technology since 1973, housed in a stainless steel body
• WRAS Approved Construction – Fully compliant with UK water regulations for peace of mind
• Self-Cleaning Function – Maintains optimal internal media efficiency with no user input
• Versatile Pipe Compatibility – Installs easily on copper, PVC, or galvanized systems
• 10-Year Parts Warranty – Reliable long-term protection from scale damage
Applications
• Boiler and Heating System Protection – Prevents limescale build-up for improved energy efficiency
• Shower and Tap Scale Prevention – Protects water outlets from mineral deposits
• Home Appliance Protection – Ideal for kettles, dishwashers, and washing machines in 1–4 person homes
Technical Specifications:
| Feature | Details |
|---|---|
| Brand | Monarch |
| Product Name | SI-15 Scaleout Inhibitor |
| Part Number | SI-15 |
| GTIN | 5060134173655 |
| Material | Stainless Steel |
| Finish | Stainless |
| Connection | 1/2″ FBSP |
| Flow Rate | 4–21 LPM |
| Water Pressure | Up to 16 bar |
| Max Operating Temp | 2–80°C |
| Dimensions (L x W x H) | 18 × 4.4 × 4.4 cm |
| Weight | 1 kg |
| Installation Method | Under Sink |
| Special Features | Catalytic Core, Self-Cleaning, No Maintenance |
Related products
-
-
-
Adey MagnaScale SR1-03-01978 15mm Magnetic Compression Scale Reducer Copper Body UK Made
Original price was: £59.99.£34.99Current price is: £34.99. -
Reviews
There are no reviews yet.