Features of the IPS KalyxX BlueLine G 1 " female scale reducer (IPSKXBG1): Anti-limescale and anti-scalding treatment Extends the life and efficiency of new and existing water heaters Reduces and prevents scale formation by 76.3% (certified by an independent laboratory) Easy to install and maintenance free For indoor or outdoor use No electricity required Environmentally friendly, no chemicals Does not affect water pressure Easily adapts to PER and other types of pipes 5 year limited warranty . Specification Model BlueLine 1’’ Connection G 1’’ (female) Diameter: 50 mm Length : 251 mm Weight: 930 grams Max. Pressure (Bar/MPa) : 10 / 1 Max. Flow rate (m3/hour) : 4 Pressure drop at maximum flow (mBar/Pa) : 6.68 / 668.76 Reduces scale build-up on water supply components (pipes, valves, faucets, shower heads, appliance water heating coils) - 76% efficiency. New patented TGP technology - Turbulent galvanic polarization - NO CHEMICALS, NO EXTERNAL ENERGY. Suitable for cold water (drinking) NRL