The 404 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 foot valve. It can be easily operated manually, or by using a surface pumping mechanism. The tubing and foot valves come in various sizes suitable for varying well diameters and sampling applications.
Specifications:
| Footvalve | Footvalve Dia. | Tubing Selection |
| 403 MIP | 1/4" (6 mm) | 1/4" x 0.17" (6 mm x 4.3 mm) |
| D16 | 5/8" (16 mm) | 5/8" x 1/2" (16 mm x 12.5 mm) |
| SS16 | 5/8" (16 mm) | 5/8" x 1/2" (16 mm x 12.5 mm) |
| SS19 | 3/4" (19 mm) | 5/8" x 1/2" (16 mm x 12.5 mm) |
| D25 | 1" (25 mm) | 5/8" x 1/2" (16 mm x 12.5 mm) |
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