Sentinel Solutions Electrolytic Scale Inhibitor 22mm Compression SESI22

The Sentinel SESI22 is a 22mm compression electrolytic scale inhibitor from Sentinel Solutions. It is an in-line water treatment device fitted into the supply serving a whole property, where it acts on the hardness salts carried in hard water. Instead of dosing the supply with chemicals, the electrolytic element encourages the dissolved hardness salts to coagulate so they pass through the system rather than depositing as limescale on heat exchangers, cylinders, taps and pipework.

• Limescale deposits returning on taps, shower heads and visible heating surfaces
• Kettling or rumbling from the boiler or cylinder as scale builds on heat transfer surfaces
• Reduced hot water flow or slower heat-up times across the property
• Repeated scale-related faults after the unit has been in service for several years
• Visible scale on the unit body or on downstream fittings

• Confirm the pipework at the installation point is 22mm and that the unit can be fitted in the correct position in the supply.
• Check the appliance model against the compatibility list below before ordering.
• Have compression olives and suitable fittings to hand, as the unit joins directly into the pipe run.
• Confirm the part number SESI22 against the unit currently installed.