The Lochinvar & A.O. Smith 100208655 Pool Heater Flow Switch is a critical component designed to ensure the efficient operation of pool heating systems. This flow switch is specifically engineered for use in pool heaters, where it plays a vital role in monitoring and regulating water flow. the switch is compact yet robust, built to withstand the demands of both residential and commerc... https://www.usapoolshop.com/100208655-lochinvar-a-o-smith-pool-heater-flow-switch