- Level Measurement & Monitoring
- Water Quality Meters
- Dataloggers & Sensors
- Monitoring Wells, Piezometers & Multilevels
- Sampling Devices & Pumps
- Microbial Sampling & Bioremediation
- Modelling Software
- Groundwater Mapping
Waterra Foot Valves
Waterra Pumps are available in four (4) performance ranges: Standard Flow, High Flow, Low Flow and Micro Flow.
Within each flow range are an assortment of different foot valves and tubing for different sampling requirements.
The performance of each flow range is defined by its tubing diameter -- the larger the tubing the greater the flow rate and depth capability.
See below for additional information on each size
The Standard Flow System is the most popular inertial pump. This system is best suited for 1” to 2” ID monitoring wells and can provide lifts of 150 to 200 feet. Flow rates can be as much as 1 gallon per minute.
The Standard Flow System is suitable for a variety of sampling environments. Optional tubing includes low density polyethylene (LDPE) (Canada only) and Teflon (FEP.
The most commonly used foot valve is the 1 inch OD, acetal thermoplastic D-25. Optional foot valves include the stainless steel 3/4" OD SS-19 and the 5/8" OD D-16 and SS-16.
The High Flow System is designed to be used in 2 inch wells or larger where a high pumping rate is desired or where very deep wells are encountered. This system is also an excellent well development tool in 2 inch piezometers.
The High Flow system can provide lift of up to 250-300 feet in 2 inch monitoring wells and flow rates of up to 4 gallons per minute.
The Low Flow System is designed to be used in small diameter piezometers (usually 1.5" ID to 0.75" ID). It can provide flow rates of up to 1/2 gallon per minute and can lift water from up to 100 feet.
The Low Flow System D-13 and SS-13 valves have a male thread which allows them to have a maximum outside diameter of 5/8” (13mm). This narrow diameter means that they will often fit into piezometers that cannot be accessed by the Standard Flow System.
The Micro Flow System is popular for use in direct push technology micro well installations and multi-level installations. The SS-10 foot valve can deliver a sample from as deep as 75 feet and flow rates with this system are usually less than 1/2 gallon per minute.