Harwil Flow Switches

Harwil Flow Switches are trusted flow control components used in pool, spa, water treatment, HVAC, and industrial applications. These switches help monitor water movement and protect equipment by confirming proper flow before pumps, heaters, chemical systems, or other components operate.

Bath & Spa Parts Online carries Harwil flow switches, sensors, and related replacement parts for service professionals and equipment owners. Harwil products are especially valuable in pool and spa systems where accurate flow detection supports safety, heater protection, and reliable performance. Built for demanding environments, Harwil Flow Switches help maintain efficient operation and reduce the risk of equipment damage caused by low-flow conditions.