| Groundwater equipment for professionals |
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Groundwater monitoring pumps |
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Waterra Inertial Pumps Tubing, foot valves and accessories |
PR07 |
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A simple and inexpensive range of pumps for groundwater sampling |
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Waterra Inertial Pumps How do they work?  Tubing fitted with a foot valve is lowered below water level to the sampling depth in the borehole and fills with water (1) To pump, the tubing is oscillated up and down. On the up-stroke (2) the valve closes and the water column is lifted within the tubing. On the down-stroke (3, 4), the upward inertia in the water column keeps and adds to the water within the tubing whilst the valve is open (3, 4). The cycle is then restarted (5) and continued. |
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Waterra Inertial Pumps are probably the easiest to use and most cost effective of all environmental sampling pumps.
They can be operated manually at shallow depths, but are their most efficient when used with a powered actuator or suction pump.
For further information on powered systems and sampling applications, download the following data sheets from our website: PR08 - PowerPack PP1, PR09 - SP1 Suction Pump, PR10 - Applications. |
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Specification and ordering information |
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Tubing Waterra’s semi-rigid HDPE (high density polyethylene) tubing enables efficient pumping from greater depths than is possible with softer (elastic) alternatives such as LDPE or nylon. Tubing is available in 6 System sizes from 6mm to 25mm in diameter. Standard tubing is the most popular size for use in 50mm diameter boreholes. Teflon tubing can be supplied in Standard and smaller sizes. |
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Foot valves The secret to inertial pumping lies in the design of our range of Delrin and Stainless Steel foot valves. The original Waterra Delrin foot valves have a cutting thread which secures the valve externally over the HDPE tubing. Our low profile bullet-headed 316 stainless steel foot valves have a tapered cutting thread with groove which positively secures the valve into the tubing. |
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Surface extension tubing A short length of disposable PVC tubing can be push-fitted over the top of the HDPE inertial pump tubing to provide a flexible point of discharge. Essential for use with HF tubing. Helpful for use with STD and LF tubing when pumping from close to the bottom of a monitoring borehole. |
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Surge blocks For increased surging action for the development of 50mm diameter monitoring boreholes. These 48mm diameter Delrin surge blocks fit directly above the foot valve onto either HF or STD tubing. They are secured with a stainless steel grub screw and hex key. |
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Installation tools Tube cutter Faster and safer than a hacksaw. Provides a clean cut to all tubing sizes without generating any swarf. Valve wrench and VS Keys Ensures that foot valves are securely attached to tubing. Designed exclusively for use with Waterra foot valves. |
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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 |