Double Valve Pumps

Model 408 Double Valve Pumps

Double Valve Pump
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Groundwater Samplers

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Low flow or high flow Operate to 500 ft (150 m) Easy to decontaminate	1.66 and 5/8 (42 mm and 16 mm) diameters Available in stainless steel or low cost PVC Dedicated and portable systems

The Model 408 Double Valve Pumps are positive displacement, gas drive pumps providing high quality, consistent samples, and excellent VOC (Volatile Organic Compound) sample results. Pumps available in stainless steel 5/8" diameter, and in either stainless steel or PVC 1.66" diameter. Portable or dedicated versions available. Can be fitted with packers to control groundwater flow and limit purge requirements. Easily disassembled for decontamination in minutes, without any tools.

Bladder Pumps

Pump Control Unit

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Bladders ensure no air/water contact during operation, providing representative groundwater samples and excellent VOC sample results. Bladder Pumps are also EPA approved for low flow groundwater sampling.

The Model 464 Pump Control Unit manually or automatically regulates the supply of compressed air to Pneumatic Pumps. Pre-set sample modes allow easy operation and up to 99 user-created flow rates can be saved to its memory.