103104

Solinst Model 408 Stainless Steel Double Valve Pump

Solinst Model 408 Stainless Steel Double Valve Pump

Description

The Solinst Double Valve Pump (DVP) is a pneumatic drive pump that allows consistent, high quality samples.

Features

  • Positive displacement, gas drive pump provides consistent samples with excellent VOC results
  • Pneumatic drive pumps are well suited for pumping contaminant liquids
  • No bladder replacement is required, and provides higher pumping rates than bladder pumps
Your Price
$158.00
Usually ships in 1-2 weeks

Shipping Information
Return Policy
Why Buy From Fondriest?

Details

The Solinst Model 408 stainless steel double valve pump (DVP) is a pneumatic drive pump that allows consistent, high quality samples. It has been field proven in thousands of applications. It offers excellent performance and reliability. No bladder replacement is required, and the Double Valve Pump provides higher pumping rates than with the Solinst Integra Bladder Pump. There is a selection of sizes and materials, variable flow rates, and it is field serviceable.

The DVP is suitable for low flow or regular flow sampling. The stainless steel pumps can operate to depths of 500 ft (150 m) and the PVC Double Valve Pump can operate to depths of 100 ft (30 m). Everything is easily accessible; replaceable and with interchangeable parts. All components can be cleaned with mild detergent or non-phosphate soap. Pumps are not damaged by operation in sediment laden water, or in dry pumping conditions.

When the pump is placed in a well or borehole, water rises inside the pump and the tubing to static level. Gas supplied from the Controller pushes down on the water column contained in the drive line tubing, closing the check valve at the base of the pump. This forces water up the sample line tubing.

A vent period, during which the gas is released, allows hydrostatic pressure to refill the pump and drive line with sample water. The top check valve prevents water in the sample line from falling back into the pump body. This pressurization and vent cycle is repeated to bring water to the surface.

For proper collection of volatiles, the pressure applied must never be high enough, nor the drive period long enough, to enable gas to enter the body of the pump and aerate the sample. If operated properly, air will never come in contact with the sample water, which produces high quality VOC samples comparable to those of a bladder pump.

Flow rates vary with depth of pump below surface, depth below water level, size of drive and sample tubing, drive and vent cycle times, gas pressure applied, aquifer recharge, and size of pump body.
Image Part # Product Description Price Stock Order
Solinst Model 408 Stainless Steel Double Valve Pump 103104 Model 408 stainless steel double valve pump, 5/8"
$158.00
Usually ships in 1-2 weeks
Solinst Model 408 1.66" SS Double Valve Pump 106082 Model 408 stainless steel double valve pump, 1.66"
$396.00
Usually ships in 1-2 weeks
Image Part # Product Description Price Stock Order
Solinst Model 464 Electronic Pump Controller 109560 Model 464 electronic pump controller (125 PSI), includes lines for bladder & double valve pumps
$1170.00
Usually ships in 1-2 weeks
Solinst 12 Volt Air Compressor 106009 12 volt oil-less air compressor, includes battery clips
$909.00
Usually ships in 1-2 weeks
Solinst Bonded Natural LDPE Tubing Spools 109430 Bonded natural LDPE tubing, 0.17" ID x 0.25" OD, 100 ft. roll
$73.00
Usually ships in 1-2 weeks
Solinst Bonded Natural LDPE Tubing Spools 109429 Bonded natural LDPE tubing, 0.17" ID x 0.25" OD, 250 ft. roll
$183.00
Usually ships in 1-2 weeks
Solinst Bonded Natural LDPE Tubing Spools 109421 Bonded natural LDPE tubing, 0.17" ID x 0.25" OD, 500 ft. roll
$365.00
Usually ships in 1-2 weeks
Solinst Bonded FEP Lined LDPE Tubing Spools 109402 Bonded FEP lined LDPE tubing, 0.17" ID x 0.25" OD, 100 ft. roll
$196.00
Usually ships in 1-2 weeks
Solinst Bonded FEP Lined LDPE Tubing Spools 108546 Bonded FEP lined LDPE tubing, 0.17" ID x 0.25" OD, 250 ft. roll
$489.00
Usually ships in 1-2 weeks
Solinst Bonded Tubing Reel Assemblies 103888 Model SC2000 1/4" bonded tubing reel assembly (up to 200 ft) for Model 407/408 pumps
$363.00
Usually ships in 1-2 weeks
Solinst Bonded Tubing Reel Assemblies 107213 Model SC3000 1/4" bonded tubing reel assembly (250 to 450 ft) for Model 407/408 pumps
$403.00
In Stock
Solinst Bonded Tubing Reel Assemblies 107844 Model SC3500 1/4" bonded tubing reel assembly (500 to 1250 ft) for Model 407/408 pumps
$1087.00
Usually ships in 1-2 weeks

Related Products

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

Colorado River Fish Contain Levels Of Selenium, Mercury

Largely seen as pristine and relatively untouched by human activity thanks to its protected status, the portion of the Colorado River flowing through Grand Canyon National Park is anything but, according to recently published research. This is evidenced by high levels of selenium and mercury found in the fishes there. Scientists from many institutions were involved in the years-long work, full results of which have been published in the journal Environmental Toxicology and Chemistry. It was led by the U.S. Geological Survey, but perhaps the contributors from Idaho State University got the best end of the stick. They were looking into the food webs of the river to evaluate concentrations of selenium and mercury gathering in fish.

Read More

Heron dipper-Tough Is Ready For Harsh Deployments

For all the straightforward groundwater monitoring applications that the folks at Heron Instruments help with, there are a few that are far from typical. These include projects that take place near remediation sites or not far from waste disposal operations. Realizing that customers working in those sorts of projects are in need of a more robust option, the company has released the dipper-Tough . The new water level meter takes inspiration from Heron’s popular dipper-T , while throwing in a host of improvements that environmental pros working in groundwater can really appreciate.

Read More