Solinst Model 408 Double Valve Pump (DVP) Submersible Pumps & Controllers the bladder expands and allows

the bladder expands and allows water to fill the bladder for another purge

Surface deformation takes place when the impact body hits the test surface

The winch is manually operated with a collapsible handle to make it completely compact

1L interface meter is suitable for wells

Solinst Model 408 Double Valve Pump (DVP) Submersible Pumps & Controllers the bladder expands and allowsThe Solinst Double Valve Pump (DVP) is a pneumatic drive pump that allows consistent, high quality samples. It has been field proven in hundreds of applications. It offers excellent performance and reliability; no bladder replacement and higher pumping rates than with the Bladder Pump; a selection of sizes and materials; variable flow rates; and is field serviceable. The Double Valve Pump is suitable for low flow or regular flow sampling, and can