Solinst Model 408M Micro Double Valve Pump

The Solinst model 408M micro double valve pump has a remarkably small and flexible design. The pump includes PTFE tubing and manifold.

Features

  • Only 3/8" (10mm) in diameter, ideal for narrow applications
  • Flexible Teflon, goes almost anywhere
  • Inexpensive and readily dedicated
Your Price $922.00
Usually ships in 1-2 weeks
Solinst
Free Lifetime Tech SupportFree Lifetime Tech Support
Free Ground ShippingFree Ground Shipping
ImagePart#Product DescriptionPriceStockOrder
Solinst Model 408M Micro Double Valve Pump108220 Model 408M micro double valve pump, 90ft PTFE tubing, and manifold
$922.00
Usually ships in 1-2 weeks
Solinst Model 408M Micro Double Valve Pump, 140ft 108219 Model 408M micro double valve pump, 140ft PTFE tubing, and manifold
$1,329.00
Usually ships in 1-2 weeks
Solinst Model 408M Micro Double Valve Pump, 240ft 108218 Model 408M micro double valve pump, 240ft PTFE tubing, and manifold
$2,158.00
Usually ships in 1-2 weeks
ImagePart#Product DescriptionPriceStockOrder
Solinst 12 Volt Air Compressor 106009 12 volt oil-less air compressor, includes battery clips
$1,063.00
Usually ships in 1-2 weeks
The Solinst Model 408M Micro Double Valve Pump (Micro DVP) has a remarkably small and flexible design. It is a pneumatic pump similar to a Bladder Pump, but using coaxial Teflon tubing, rather than a Teflon bladder to give high quality samples. It is small enough to fit in 1/2" (13 mm) tubing and all channels of the Solinst Model 403 CMT Systems, as its diameter is only 3/8" (10mm). The unique combination of flexibility and size make the pump easy to transport and install in a variety of applications.

The Micro DVP is ideal for low flow sampling and narrow down-hole applications. Flow rates of 20 to 150ml/min, are obtained, with very small associated purge volumes from within the narrow applications. The Micro DVP is durable and easy to operate using the pre-sets and fine tubing capabilities built into the Solinst Model 466 Electronic Control Unit.

The Micro DVP uses coaxial Teflon tubing in lengths of 50', 100', 150', and 200' (15m, 30m, 50m, and60 m). The 50 ft. (15 m) pump is also available with LDPE outer drive tube and a Teflon inner tube. The pump body and filter is 6 x 3/8" (150x10mm). It is constructed of coaxial Teflon tubing with stainless steel fittings and a 100 mesh stainless steel filter. Filters are easily cleaned and replaced. A manifold at the top end of the pump has a 3/16" (5mm) Teflon sample tube and a quick-connect fitting for easy attachment to the Control Unit. A multi-purge sampling head is also available for use with the CMT System.

Formation water enters through the filter under hydrostatic pressure into both the inner Teflon tube and the annulus of the coaxial tubes. Drive gas/air is cycled down the annular space between the two tubes to close the lower check valve and push the water up the inner sample tube. The pump is then vented to allow new formation water to enter both tubes under hydrostatic pressure. Air/gas pressures are carefully controlled at all times to ensure that the air/water interface never enters the body of the pump. Repeating the pressure/vent cycle brings the high quality sample to the surface at a controlled rate. The Micro DVP operates with 2ft (0.6m) or more head of water above the intake.

Applications include groundwater sampling in:
  • CMT and Waterloo Multilevel Systems
  • Direct-Push/Drive-Points
  • Low flow monitoring in narrow diameters
Questions & Answers
No Questions
Please, mind that only logged in users can submit questions

In The News

Solinst groundwater samplers: Versatile options for a variety of applications

Groundwater sampling can be a challenging task that requires different tools for different applications. Solinst groundwater samplers offer the capability to obtain commonly needed representative samples of groundwater using different approaches of water withdrawal. Solinst’s 425 Discrete Interval Sampler uses passive sampling to grab water from a specific depth. The 407 Bladder Pump enables continuous airtight low flow sampling.  The 408 Double Valve Pump can continuously sample at variable rates. “One sampler isn’t necessarily going to be for every site,” said Randy Blackburn, Solinst product manager. Each has different means of fluid sampling. The 425 sampler relies on a manual air pump that pressurizes the sampler based on the water depth.

Read More

Extreme Wave Heights, Ocean Winds Increasing Globally

Around the world, extreme wave heights and ocean winds are increasing. The greatest increase is happening in the Southern Ocean, according to recent research from the University of Melbourne , and Dr. Ian Young corresponded with EM about what inspired the work. “Our main interest is ocean waves, and we are interested in wind because it generates waves,” explains Dr. Young. “Ocean waves are important for the design of coastal and offshore structures, the erosion of beaches and coastal flooding, and the safety of shipping.” Waves also have a role in determining how much heat, energy and gas can be trapped in the ocean. “The major reason why changes in wave height may be important is because of sea level rise,” details Dr. Young.

Read More

Measuring Rising Floodwaters with the USGS

All year long the US Geological Survey (USGS) in North Dakota and South Dakota monitors water levels, but during times of flooding, all eyes are on the team. EM spoke to USGS data chief Chris Laveau about the monitoring efforts. “The US Geological Survey in North Dakota and South Dakota is one entity, so we monitor the flooding in both states,” explains Mr. Laveau. “The role is to provide continuous information on water level, we call that gauge height or stage, and we also provide continuous information at a lot of locations on stream flow, typically called discharge. We do that year round but, obviously, during a flood event it garners more attention.

Read More