Optimize the Pumping Rate
For the most efficient operation, the following points should be considered when operating the 404 Inertial Sampling Pump:
- The tubing should be as straight and rigid as possible and centered in the well.
- The pumping motion should be constant (i.e. no stops or delays) and the strokes should be distinct and rapid.
- The footvalve must be submerged at all times to operate. It is best to have the footvalve as deep as possible below static water level.
The Inertial Pump can be an excellent well development tool. A minimum annular space between the footvalve and the well casing, can create a strong churning effect that helps remove silt and fine sand, to enhance well development. Turbidity is greatly reduced after well development.
Pumping silty water is possible, however, should the silt settle and clog the footvalve, it may be cleared by unscrewing the footvalve from the tubing and tapping the footvalve and tubing to dislodge the sediment.
In-line Disposable Filters
In-line Disposable Filters are easily connected to the riser tubing using the 3/8" (9.5 mm) hose barb inlet. Simply press fit the inlet into the tubing and operate the pump as usual. The outlet connector is also a 3/8" (9.5 mm) hose barb. There is also a 1/8" NPTM vent/drain connection. The operating pressure of the pump is sufficient to filter the sample.