SOVEMA Universelle Extra Deep Hand Pump
Universelle Extra Deep Well Hand Pump is a reciprocating level action water pump designed by Sovema (France).
The SOVEMA Universelle Extra Deep Well Hand Pump is a reciprocating level action pump for deep wells. The modified design is based on the patented design of the UPM® pump – an older model that is found in many areas of West Africa.
Primarily Sub Saharan Africa, mainly: Benin, Togo, Chad, Niger, Sudan, Ivory Coast, Burkina Faso, and Kenya. Sovema also aims to distribute the pump in Asia. Interview with representative
SOVEMA commercializes the UNIVERSELLE pumps through its distributors’ network in Africa and in Asia.
Goal 6: Clean water and sanitation
Communities in regions without easy access to surface water.
Manufactured to order in the Sovema workshop located in Vauvert (Gard-France) Interview with representative
In 2010, SOVEMA acquired the operating rights and the patent of the UPM® pump. Sovema designed a new superstructure and improved the principle of risers with multiple pistons (UPM® patented). Interview with representative
This product is by humanitarian organizations, and through SOVEMA distribution networks within target regions.
The exact number of products distributed to date is unknown. Over 4000 products have been installed in Sub Saharan Africa since 2000.
Description of the pump type
Power required, measured in watts
Manufacturer-specified discharge rate, measured at a specific head
Maximum depth of water the pump can pull
Piston nominal diameter, measured in centimeters
The Universelle Extra Deep Well Handpump is a reciprocating level action pump for deep wells. The pump functions by lifting water via a piston that is raised and lowered inside a cylinde. The piston (or plunger) is moved by a pump rod connected directly to the lever handle at the pump head. The increased length of the water column in deep boreholes requires more effort to draw water and the lever of the handle makes the operation easier. The function of the reciprocating pump is based on the principle that water flows from areas of high pressure to areas of low pressure. The reciprocating pump creates an area of sufficiently low pressure above the body of water, causing it to flow upward. The Universelle delivers discharge rate of 1000 liters per hour at 70m with a pace of 40 strokes per minute.
The Universelle has the following unique design features:
-Modified pistons which are placed every 3 meters and adapt to slightly non-vertical bore-holes and possible strain of rising pipes. The permanent self-centering which occurs between piston skirts and rising pipes improves hydraulic joint’s tightness thus increasing pump’s efficiency
-Cylinder free design that reduces mechanical wear inside the riser. The tightness between the pipe and the pistons is naturally ensured by the hydraulic natural seal which is ensured by each rod’s upward stroke.
-Pump is self-priming at all depths.
-Coupling a ‘single mobile pulley’ to a modular counterweight, to increase piston stroke and allow adjustment of the required pumping strength to decrease the effort applied by the user.
-Corrosion resistant materials for all parts which are directly in contact with water. Specifically:
Riser/ PVC cylinder;
Riser plastic couplings;
Rods and nuts in stainless steel;
Pistons and foot valve in PVC and ABS.
The Universelle Extra Deep Well Handpump was designed to be a “village level operation maintenance” (VLOM) pump. The installation and maintenance are carried out in the village without any hoisting or extraction system. Human strength is sufficient to pull out the 2” rising pipe during periodic maintenance.
Common use wear parts are standard and are available locally. Spare piston sets are supplied to cover 2 years operation needs and also available through the company’s distribution network. All the external parts of the pump are engineered so as to be made or repaired locally if need be.
Additionally, Sovema claims that the pump requires almost no maintenance to its infrastructure as pistons, which are self-centering, are devoid of joints, thus suppressing all frictions inside the riser. Having pistons placed every 3 meters, reduces the pressure (0.3kg/cm²) exerted on them and ensures a longer life span. Interview with representative
The pump requires minimal maintenance. Its infrastructure includes pistons, which are self-centering and devoid of joints, thus suppressing all frictions inside the riser. The annual maintenance cost was validated by the Agence Française de Développement and is estimated to be <$52.00 USD (30000 CFA) (including spare parts). Interview with representative
Sovema notes the following performance targets: Interview with representative
-Certified discharge rate of 1000 Liters per hour at 70m with a pace of 40 strokes per minute.
-Mechanical wear inside the riser is suppressed because the design is cylinder free.
-Reaches a level which is over a 100m deep.
-There is no water contamination risk as the pump doesn’t require the introduction of any sort of liquid into the borehole, neither for its commissioning nor for its priming.
Discharge rate of 1000 liters per hour at 70m with a pace of 40 strokes per minute, verified by manufacturer.
The Bureau Veritas company has previously assisted in testing, inspection and certification of the Universelle Extra Deep Hand Pump.
No known safety hazards are related to this product.
It is possible to discharge pumped water in a water tower at a maximum height of 3 m. by adapting a packing gland on the reservoir itself. Could also be paired with a purification, disinfection, or treatment system to ensure water potability. Interview with representative
Sovema guarantees that pump anti-oxidant materials are certified by Sanitary Certificates in compliance with European Community standards. The foot of the pump, conforms to CIEH standards and the superstructure elements conform to International standards (unspecified). Interview with representative
Water discharge rates were tested by Bureau Veritas (R-Aix-IND-12-2419817-01/03’ February 01, 2012).
AFD (French Agency for Development) Report ’synthesis of retrospective evaluations for the village hydraulic projects’ in June 2000.
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