The Redi-Flo 2” pump is specifically designed for groundwater monitoring and fits inside a 2” Sch.40 well or larger, with pumping capabilities up to 270 ft. The wide range of flow capabilities makes this the perfect sampling pump, for traditional purging (taking several well volumes) or for low flow purging to stabilization. With operation as simple as turning one dial on the Variable Frequency Drive, Redi-Flo2 is the only sampling pump you’ll need, and has been approved by the EPA since 1992.