DescriptionThe Waterra SS-9 Foot Valve (316 Stainless Steel) is part of the Nano Flow System is designed to be used in drive points (usually 0.5 inch (12.5 mm) ID). It can provide flow rates of up to 1/4 gallon per minute (1 lpm) and can lift groundwater up to 50 feet (15 m).The Waterra SS-9 Foot Valve has a female thread so it screws on over top of the 0.17 x 1/4 inch Waterra Nano tubing. The outside diameter of the system then is just under 3/8” (9 mm). This narrow diameter means that they will fit into narrow or obstructed piezometers.The Nano Flow system is usually operated by hand and requires Waterra Nano Flow Tubing.There is not an acetal thermoplastic (Delrin) equivalent foot valve.
