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Popular Equipment
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NivuFlow Gauging
Van Walt’s aim is to keep flow gauging simple. To do this we now offer a flow gauging service where we will travel to your site and carry out flow gauging in your stream or pipe on your behalf. Once our site visit is complete, we will issue a full report which will include:- Location photos
- A profile of the bed
- The level of each sampled segment
- The velocity profile over 10 sampled segments
- The flow rate
- The area, hydraulic radius and wetted perimeter
- PDF and .CSV results
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42 mm Bladder Pump & Geocontrol Pro
A small, portable, very efficient package that includes a built-in high efficiency electrical compressor and optional auto shut off makes these bladder pumps ideal low flow groundwater sampling pumps capable of pumping from depths of up to 60 meters. The small electric compressor uses an external rechargeable lead acid battery.Requires Tubing & Bladders:
Bonded Polyethylene Tubing for 42 mm Bladder Pump 4×6 mm Polyethylene tubing (12.20.03) and 6x8 mm Polyethylene tubing (12.20.04 or 12.20.05) Polyethylene Bladder 42 mm -
Polyethylene Tubing – 12.20.03
4x6mm, 100m roll of Polyethylene Tubing for the Advanced Peristaltic Pump and as Air & Product Tubing for the 22 mm Bladder Pump plus Air Tubing for the 42 mm Bladder Pump. Compatible with the 4x8mm silicone tubing (12.20.46). Will give a head lift of 9.5m. Hallmarked and carries our QA plus stamp of purity and cleanliness. It is ideal for sampling for trace metal; Hydro-carbons; Volatiles and Macro-parameters analysis.£43.31 - -
Gas Analyser GA5000 Portable Landfill Meter
A landfill and contaminated land portable gas analyser for measurements of CH4, CO2, O2, H2S and CO. Internal pump and flow pod. Capable of gas analysis, pressure test and flow test. Easy to use, the GA5000 is reliable and accurate for monitoring:- Landfill gas
- Waste to energy sites
- Site investigation.
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Geosub 2 Pump & Controller System
The Geosub 2 Pump & Controller system is a versatile, stainless steel, pumping solution. A DC pump for low flow sampling and high flow well purging. Robust and tested design with stainless steel components for sampling in the harshest well conditions. The Geosub 2 operates with the Geosub 2 Controller and a portable reel system or as a dedicated well system to 60 m depth. Requires tubing: 10 x 12 mm Polyethylene tubing (12.20.13) Please talk to us if your application is deeper than 60m. -
YSI Pro Plus
The YSI Professional Plus handheld multiparameter meter provides extreme flexibility for the measurement of a variety of combinations. The Quatro cable attached to the Pro Plus allows you to utilise 4-ports to measure temperature/conductivity, DO, pH, and ORP. Supplied with Buffer Solutions & Flow Cell. Buffer Solutions are only chargeable if used. -
vanwaltHex-Pump
The vanwaltHex-Pump is a high-quality peristaltic pump for low flow purging and sampling. It is a premium pump made from high-grade components. It is a strong, field-tested, easy-to-use pump for use in the toughest conditions for low-flow sampling and purging. The pump is entirely designed and manufactured by Van Walt. Requires tubing: 6×8 mm Polyethylene tubing (12.20.04) with the 4.8 mm x 9.8 mm silicone tubing (HP-SIL)
