The FW Float Valve uses the weight and buoyancy of their float to accurately maintain water levels inside water reservoir tanks.
This valve is designed to fully open when the water level reaches the preset low level and to close drip-tight when the level reaches the preset high point.The FW series divides inlet pressure into two opposite directions. Pressure is directed up to the piston, while also being directed down to the disk and spindle. This nearly equalizes the opening and closing pressures, thus making a large float with great buoyancy unnecessary. A smaller float is all that is needed to close the vale drip-tight.