Solinst Inertial Pump Model 404
Special Price $4.98 Regular Price $5.24

The Inertial Pump is a simple, reliable inertial pump that provides a cost effective sampling option for groundwater monitoring.

The Pump consists of a riser tube fitted with a one-way footvalve. It can be easily operated manually at shallow depths, or by using a surface pumping mechanism. The tubing and footvalves come in a range of sizes suitable for most well diameters and sampling applications. A 1/4" (6 mm) Mini Inertial Pump is available for sampling inside CMT Multilevel Systems

The Inertial Pump is a simple alternative to using a bailer. Like a bailer, the key part is the check ball which is located in the foot of the pump. As such, the Inertial Pump is often referred to as a ‘footvalve’.

Footvalves consist of a check ball inside the valve body, and are available in Delrin or stainless steel, in a variety of sizes from 5/8" to 1" (16 mm to 25 mm) diameters. Tapered threads enable the footvalve to self-tap onto either end of the riser tubing.

The Mini Inertial Pump (403 MIP) consists of two stainless steel inserts and a check ball that are easily installed inside the 1/4" x 0.17" (6mm x 4.3 mm) tubing.

Flow rate is a function of the momentum generated in the tubing. It varies with tubing length, submergence depth of the footvalve, flexing of the tube, and the rate at which the tubing is pumped.
• Up to 7.6 L/min (2 gpm) with 5/8" x 1/2" (16 mm x 12.5 mm) tubing
Higher volumes are obtained with the use of electric or gasoline powered surface pumping mechanisms.