What component stores salt for the regeneration solution in softeners?

The component that stores salt for the regeneration solution in water softeners is the brine tank. This tank is specifically designed to hold the salt, which, when mixed with water, creates a concentrated brine solution. During the regeneration process, this brine is drawn into the resin bed, allowing the resin to recharge by exchanging sodium ions for hardness ions in the water.

The brine tank's primary role is pivotal in the overall function of the water softener, as having an adequate supply of salt is essential for the ongoing process of softening water. Without it, the system would not be able to effectively regenerate the resin, leading to a decline in water quality. The design and function of the brine tank ensure that salt is readily available when needed for the regeneration cycle.