Micro Double Valve Pump Design and Construction

Model 408M Micro Double Valve Pump

408m micro double valve pump


solinst electronic pump control unit

Model 464 Electronic Control Unit

pump manifold with quick-connect for drive air
and ptfe sample tube

Pump Manifold with Quick-Connect for Drive Air
and PTFE Sample Tube

The Micro Double Valve Pump (Micro DVP) has a remarkably small and flexible design. As a positive displacement pneumatic pump, it uses coaxial PTFE tubing 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" (10 mm). 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 150 ml/min, are possible within the narrow applications. The Micro DVP is durable and easy to operate using the pre-sets and custom sampling capabilities built into the Solinst Model 464 Electronic Control Unit


Design & Construction

The Micro DVP uses coaxial PTFE tubing in lengths of 90 ft, 140 ft, and 240 ft. The pump body and filter assembly is 6" long x 3/8" diameter (150 mm x 10 mm). It is constructed of coaxial PTFE tubing with stainless steel fittings and a sintered 316 stainless steel 50 micron filter. Filters are easily cleaned and replaced. A manifold at the top end of the pump has a 3/16" (5 mm) PTFE sample tube and a quick-connect fitting for easy attachment to a Control Unit. A multi-purge sampling head is also available for use with the CMT System.