Ball Float Valves Are Used To Automatically Control The Water Levels In Water Troughs; Tanks And Reservoirs. *The Sweetwater Valve Is Made From Mild Steel That Is Electroplated And Powder Coated With The Signature Colour Blue; To Delay Any Rust And Calcification. *Comes With A Reducer 20 25mm. *Approximate Flow 42 Litres Per Min At 1 Bar. *Water Inlet: 20/25mm.