High FLow Stainless Steel Waterra foot valve (inerta pump) works with 1" OD Tubing. The High Flow System works well with deep well sampling. The Foot Valve System is a simple, inexpensive way to sample a monitoring well in four steps. A Foot Valve is attached the bottom end of a length of tubing. The Foot Valve/Tubing combo is inserted into the well, Foot Valve first, until the valve is submerged beneath the water table to the desired pumping depth. The tubing is then oscillated (pulled up and then pushed down) over a short vertical range of motion either by hand or with a Tubing Actuator. Water builds up in the oscillating tubing until it discharges at surface. The High Flow System is designed to be used in 2 inch wells or larger where a high pumping rate is desired or where very deep wells are encountered. This system is also an excellent well development tool in 2 inch piezometers. The High Flow system can provide lift of up to 250-300 feet in 2 inch monitoring wells and flow rates of up to 4 gallons per minute.
