| Groundwater equipment for professionals |
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Groundwater monitoring pumps |
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Waterra Inertial Pumps Applications |
PR10 |
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Manual Pumping See data sheet PR07 
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PowerPack PP1 See data sheet PR08 
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SP1 suction pump See data sheet PR09 
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6 sampling systems 3 pumping methods Waterra Inertial Pumps are a simple to use and versatile environmental monitoring pump. They allow pumping at low and high flow rates and are used for purging and sampling of groundwater. Tubing and foot valves are inexpensive and easy to maintain making inertial pumps economic and practical for dedicated applications where cross contamination is a concern.    |
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Purging and sampling of monitoring boreholes Waterra inertial pumps can be used for both purging and sampling small diameter monitoring boreholes (from 10 to 200mm diameter). By dedicating pumps to each borehole, cross-contamination between boreholes can be eliminated. Use the table below to choose the foot valve and tubing best suited to a specific borehole size.  Technical data for operation of Waterra Inertial Pumps is provided in the table below. Manual operation is possible at depths indicated, but we recommend the use of a mechanical actuator (PowerPack PP1) or suction pump (Waterra SP1) for consistent and easier pumping performance.  Other applications In-line filtration  Use a short length of Wattera PVC surface extension tube to provide a flexible discharge hose. This is attachment by simply push fitting over the inertial pump tubing. The extension tube is normally cut 2 to 3m in length. Essential when using with High Flow Tubing and where water level is close to the base of the borehole. STX-1 Standard PVC 22mm OD extension tube (per m) HFX-1 High Flow PVC 30mm OD extension tube (per m) LFX-1 Low Flow PVC 18mm OD extension tube (per m) |
Sampling narrow diameter piezometers or multi-level tubes 
With a wide choice of small diameter systems available from Waterra, sampling from narrow tubes and piezometers could not be easier. Simply
select a Waterra system with an overall diameter of ~4mm or less than the internal diameter of the tubing to be sampled.The graphic illustrates sampling from a 19mm OD piezometer tube (17mm ID) using LF tubing and a VS-3 foot valve. Sampling below LNAPL layer 
1. HF tubing with a cap covering its base is lowered into borehole and positioned below the LNAPL layer within the water column.
Cap is retained by a short tether.2. STD tubing with a VS-4 foot valve is fed through the HF tubing. The STD tubing is used to push out the end cap. The STD tubing is then lowered to the required sampling depth before pumping to obtain a sample uncontaminated by floating product. 3. Alternatively: a. Use LF tubing with a VS3 foot valve in place of STD tubing b. Insert either SMF or MF tubing (VS1, or VS2 foot valves) inside STD tubing fitted with an end cap. Well development / sediment removal 
The ideal well development tool is one that surges and pumps the monitoring well simultaneously. The Waterra inertial pump does exactly
this. Through a combination of mechanical surging and high volume pumping, the Waterra inertial pump is capable of removing water with
very high concentrations of silt, clay and fine sand.Sampling for volatile organic compounds (VOC’s) 
Inertial pumps can be used to sample for VOC’s by using a siphon tube which minimises air contact at the point of discharge.Method: Cut a 2.5m length of 6mm SMF tubing and insert into the discharge end of the Waterra tube, leaving approximately 10 cm protruding. Pump as normal gripping both tubes and forming an arc above your head. Stop pumping. Water will continue as a laminar flow through the SMF tubing and can be collected into the mouth of a sample bottle or VOC vial. |
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Waterra (UK) Ltd, Unit 4, 179-189 Stratford Road, Shirley, Solihull B90 3AU, UK Tel: +44 (0)121 733 7743 Fax: +44 (0)121 733 7746 email: sales@WaterraUK.com |
www.WaterraUK.com |