408 Double Valve Pump

408 Double Valve Pumps are positive displacement, gas drive pumps providing high quality, consistent samples, and excellent VOC sample results. Pumps are available in stainless steel 5/8″ diameter, and 1.66″ diameter. Portable or dedicated versions are available. They can be fitted with packers to control groundwater flow and limit purge requirements. DVPs are easily disassembled for decontamination in minutes, without any tools.

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Easy DecontaminationEverything is easily accessible or replaceable without the need for tools. All components can be cleaned with mild detergent or non-phosphate soap.
Survives Dry Pumping, Dirty Air and SandPumps are not damaged by operation in sediment laden water, or in dry pumping conditions.
Saves Time and CostsLow flow sampling reduces purge volumes and the time it takes to obtain a sample. There is less need for repeat sampling, which reduces the time needed for each sampling round.
Part of Simple SystemThe air compressor or tank, pump controller, and flowthrough cell are easily transported to each site with the DVP. Compression fittings, quick-connect, and push-fit connections allow simple attachment to well caps or portable reels.