General Hydroponics WaterFarm Float Valve w/Barbed Fitting is primarily used in conjunction with hydroponic controllers. The valve helps to fill or drain water from a hydroponic system. The float is compatible with all WaterFarm hydroponic systems. Float comes standard with all WaterFarm systems. Use as a replacement part or a new piece to a custom system. Complete your hydroponic set up with this General Hydroponics WaterFarm valve today!