Engineered with a 3/4" sweat connection

eliminating the safety risks associated with "universal" adjustables that often fail to meet the delicate tolerances required for high-efficiency condensing furnaces

allowing for quick extraction without damaging the mating pulley or motor shaft

What are the signs that a 2

always cross-reference your furnace model number before purchase

Hydrolevel FS200 Switch 30067439-890 Engineered with a 3/4" sweatThe Hydrolevel FS200 Liquid Flow Switch (Part Number 44 200) is a heavy duty, general purpose control designed for high reliability flow detection in hydronic heating and cooling systems. Built to withstand a maximum pressure of 160 PSI and fluid temperatures up to 250? F, this switch is the industry standard for protecting boilers, pumps, and chillers from no flow conditions. Its universal design allows it to serve as a direct field replacement for