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QSP - Environmental Well Packers
The Environmental Packer is a Fixed-End Style Packer manufactured using either Neoprene, EPDM or Viton® rubber gland element and Type 304 or Type 316 stainless steel. It is designed for applications such as Groundwater Monitoring, Methane gas control or collection (typical in landfills and mines), Vacuum sampling at or below Leachate pads, Formation pressure monitoring, and Vados zone sampling and injection.
It is designed for use in cased wells* only, and may be used residing above or below the applicable pump (either Bladder, Electric or Piston Sampling Pumps) to significantly reduce purge time and volume. They are available for two inch or larger casing, and if isolating a specific test zone in a well is necessary, two or more Environmental Packers can be adapted to work with the sampling pump. It can be inflated with either inert gas or water. We can custom design systems to fit your specific site requirements. Please call for details.
INSTRUCTIONS TO SET THE PACKER:
* WARNING: Never inflate this packer unless it is confined in a cased well. Maximum internal pressure must not exceed 200 psi.
- Lower Packer into the well and inflate (with either inert gas or water) to the static head above the packer (distance from the packer to the water level x .43).
- Inflate to 25 psi. This pressure will expand the gland to the well size.
- Inflate to 20% of the maximum possible differential across the Packer. Be sure to use an accurate pressure gauge.
Example: The Packer is set at 100 feet and the water level is at the top of the well. If you withdraw all the water below the Packer, the differential would be 43 psi. In step 3, you would add 9 psi.