F59 Series controls start an electric motor on liquid level rise and stop it on liquid level drop. The control cuts in when upper weight is submerged about halfway, and cuts out when lower weight is half-exposed. Use for on/off control of sump pumps.
F261 Series flow switches respond to fluid flow in lines carrying water, ethylene glycol, or other nonhazardous fluids. These models also work in applications with swimming pool water and lubricating oils. Switches use varied paddle sizes to respond to fluid flow rates in applications with pipe sizes greater than 1 inch trade size.
F262 airflow switch detects airflow or its absence, responding to the velocity of air movement in a duct. The single-pole, double-throw (SPDT) control can be wired to open one circuit and close another for signaling or interlock purposes, avoiding overheating, coil icing, or other conditions that may harm air handling equipment.
F263 Series liquid level float switches maintain a liquid level in indoor or outdoor closed tanks that hold water or other nonhazardous liquids. A change in the liquid level causes the single-pole, double-throw (SPDT) switch to close one circuit and open another.
F93 Series air volume controls perform a similar function for deep well water systems.