The HYDROLINE RO-S treats incoming water before it reaches a connected glasswasher or dishwasher. By reducing dissolved salts and minerals, it helps limit spots on washed glasses, dishes and cutlery and protects the machine against limescale build-up. Its compact shape allows vertical or horizontal placement near the wash station.

Mains water is pushed through a fine reverse-osmosis membrane. A carbon pre-filter removes larger particles to protect that membrane, and staff can reach the pre-filter and membrane for maintenance. An integrated display makes the unit straightforward to operate. The bypass function allows warewashing to continue when the treatment stage is bypassed.

The RO-S is intended for lower-capacity requirements and provides continuous treated-water output. Installers should assess inlet hardness, water pressure, drainage and backflow protection for the site. Hobart recommends upstream softening when hardness exceeds 10 °dH to protect the membrane and maintain treatment performance.