The Waterra low flow system foot valves are for use with the Waterra Hydrolift 2 Interial Pump. The D-13 and SS-13 foot valves are designed to thread into the center of the tubing.
Well Sizes: 0.75" ID to 1.5" ID Piezometers
Max Lift: 100 feet
Max Flow: 0.5 Gallon per Minute