Calmag SI-CALMAG 15mm Scale Inhibitor

Product no.: SI-CALMAG

In stock
can be shipped within 1 to 3 days

Price without VAT or delivery

CalMag is a magnetic scale inhibitor. For more information on how our scale inhibitors work please click here.

CalMag can be fitted onto the hot or cold water lines. The unit is also available to fit 15mm and 22mm pipework. It comes with compression fittings as standard and does not require earth bonding. Once the unit has been installed you can sit back and relax as it will continue to work day and night without the need for regular maintenance.

CalMag comes with a lifetime guarantee on parts. For more details please click here .

After Installation you should notice the following effects?

1. Any hard limescale that has formed around taps, sinks etc, will begin to soften with regular contact with treated water. This will make it much easier to clean.

2. Shower heads will be become descaled over time. Initially, showerheads may become blocked with loose limescale debris (often the case with electric showers). To solve this, simply remove the shower head and rinse out the debris.

3. After several months your hot water system will gradually become more efficient. Eventually you should be able to lower the water temperature and make considerable savings over the year. For more information on how limescale can affect the efficiency of your heating system please click here.


Product Name

External Diameter

Internal Diameter


Maximum Flow Rate

Maximum Working Pressure

Maximum Working Temperature

Full Metal Body

Earth Bonding Required

CalMag  (Compression)

22 mm

15 mm

190 mm (15mm)

1.08 l/sec
14 gpm

12 bar (168 psi)

100 Degree C