McAlpine Scale Defender Whole House Scale Inhibitor
The Scale Defender is a whole house inhibitor that filters water through a polyphosphate cartridge to more effectively protect appliances from limescale build up
Offers a compact and lower running cost alternative to water softeners
The food grade polyphosphate coats the calcite in the water supply preventing it from sticking to pipe work, boilers, hot water cylinders, kitchen appliances, taps, shower screens and showers.
- Very compact at 195mm tall and 180mm wide
- Has 3/4" BSP threads and includes 22mm compression fittings and 15mm internal reducers
- Pre-filter will catch sand and other large pieces of debris
- Suitable for pressure between 0.5 and 10 bar pressure
- Cartridge should be be changed every 40,000 litres (roughly 4-6 months)
- McAlpine code: SCA-STA
Replacement Polyphosphate cartridges are available here
Register for your free lifetime guarantee at www.mcalpineplumbing.com/sdregistration
Please note that all prices include 20% VAT