Different Water Softener Parts And Their Functions

What is a water softener?

A water softener is a household machine that helps you flush out the calcium and magnesium in hard water hence turning it into soft water through a filtration process. There are two major processes, the water softening process which is when the hard water is being transformed into soft water, and the regeneration process when brine is used to flush away the calcium and magnesium ions in the mineral tank. The process is quite easy and water generated is safe for home use such as washing and bathing.

Parts of a water softener

There are three significant parts of a water softener alongside other secondary parts. The three major sections of a water softener are; the control head/valve, the mineral/resin tank and the brine tank. Each component has its distinctive function, and they all work together to help transform hard water into soft water.

Control head/valve

The control valve is a vital part of a water softener which is being controlled by a small motor and a timer. Its function is to direct water to the various components where it is needed. It is responsible for the control of water passage in and out of each chamber especially the flushing of the calcium and magnesium from the resin chamber.

Brine tank/chamber

The brine chamber is where the salt used for regeneration of the resin chamber is stored. After the water softening process is done, the resin chamber needs to be regenerated to ensure efficiency in water softening. The salt and water mixture in the brine chamber is flushed through the resin tank through a tube and into the drain where it is stored before being disposed or softened again. This process is known as regeneration and is essential in a water softener.

Mineral tank/Resin chamber

The resin tank is the chamber filled with calcium and magnesium ion beads. When water passes through the water inlet, it enters this chamber for softening. Here, the beads are used to interchange the sodium and calcium minerals in the hard water with the calcium and magnesium ions in the resin chamber. This is called the softening process. After this is done, the water is moved out through the water outlet as soft water. This process usually clogs the resin chamber with excess calcium and magnesium ions which leads to regeneration, a process whereby brine is passed through the beads to flush out the excess ions present in the resin chamber.

Water inlet

Just like the name says, this is the part of the water softener, usually tube-like where the hard water enters and is being channeled to the resin chamber for softening.

Water outlet

Like the water inlet, the water outlet is responsible for the collection of soft water from the resin chamber and passing of this water into your tap or water storage.


The drain is a part in the water softener where regenerated water containing sodium, magnesium, and calcium ions are stored to be disposed of.

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