ST10 Water Softening Insert WaterRO 10" Water Filter

Effective water softening and protection against limescale

The ST10 WaterRO insert is designed to reduce water hardness by removing calcium and magnesium ions and replacing them with sodium ions. This method helps limit the formation of limescale, which over time reduces the efficiency of installations and devices that come into contact with water.

Regular use of the softening insert results in better utility water quality, less limescale buildup on heating elements and fittings, and more stable operation of household appliances.

Key advantages of the ST10 WaterRO insert

• Effective water softening – removes limescale deposits, improving water quality.
• Appliance protection – helps prevent failures of washing machines, dishwashers, and boilers.
• Wide compatibility – fits most 10” filter housings.
• Safe and certified – approved by NSF, FDA, and PZH.
• Advanced filtration technology – even water flow through the entire granulate bed.

Practical features and benefits

This filter insert has been developed for everyday use in home filtration systems. It fits most standard 10" housings, making installation quick and convenient. It can be used both in under-sink filters and in systems mounted directly on pipes.

• High efficiency – effectively exchanges calcium and magnesium ions for sodium ions.
• Universal application – for cold and hot water.
• Additional end filter – prevents granulate particles from passing through.
• Energy and cost savings – improves the efficiency of heating systems.

Why choose a softening insert for a 10" housing

Water softening is one of the simplest ways to reduce problems associated with hard water at home. Less limescale means not only cleaner installation components, but also fewer deposits in devices responsible for heating and circulating water.

In practice, this translates into more economical operation and better protection of everyday equipment. The insert can function as a standalone filtration element or complement a more advanced water filtration system, including installations working with solutions such as an osmosis filter, reverse osmosis filter, reverse osmosis, or a reverse osmosis system.

• Longer device lifespan – no limescale means fewer failures.
• Lower operating costs – reduced energy and detergent consumption.
• Easy installation – compatibility with 10” housings ensures quick mounting.

How the ST10 WaterRO softening insert works

At the heart of the insert is an ion-exchange granulate with a grain size of 0.2–0.7 mm. The bed is responsible for the ion exchange process that affects water hardness. As a result, the insert reduces limescale buildup and supports the proper operation of water installations, heating systems, and household appliances.

The advanced design of the insert ensures even water flow through the entire granulate bed, which supports effective use of the filtration media. An additional end filter prevents granulate particles from entering the further part of the installation.

Application

The ST10 WaterRO insert is used wherever the goal is to reduce the effects of hard water. It is a practical solution for everyday home use, especially in places exposed to limescale buildup in installations and devices.

• in 10" filter housings,
• in under-sink filters,
• in pipe-mounted systems,
• for protecting washing machines, dishwashers, and boilers,
• for use with cold and hot water.

Technical specifications

FAQ