The Aquascape Water Fill Valve 200 automatically adds water to your pond, waterfall, or fountain when needed. Adding a fill valve will help to reduce the time spent filling your water feature and protects your pump from running dry in the case of water loss. The slow addition of water also helps to contribute to a healthy ecosystem by preventing large chemistry swings associated with adding large amounts of water at once. The valve's small size and ability to handle up to a 3 gallons per minute flow rate (up to 100 PSI) allow the valve to be installed into a wide variety of water feature applications. The valve includes fittings to connect to standard garden hose ½“poly pipe and ½” PVC pipe.