Float Ball Valve 1/2" 3" Tail / 6" Lever Brass finish Primarily used in domestic water tanks Fit with a float For high pressure water systems Easi Plumb 1/2" Brass Float Ball Valve (3" Tail 6" Lever) | Ep12bvh12The Easi Plumb High Pressure Brass Float Valve with 3in Tail is primarily used for filling water tanks such as those found in domestic attic spaces. This brass valve can also be used in commercial, industrial and agricultural water tanks and is ideal for high pressure water systems. A float is fitted to the arm and as the float rises the valve shuts off.