Hand pumps
are readily replacing the conventional use of wells to provide a simple
solution for providing hygienic supply of drinking water in rural and suburban environments.
They improve the hygienic conditions under which water is drawn off, by
eliminating the use of buckets and open vessels, thereby eliminating to a great
extent the risk of water contamination.
The Afridev hand pump is one of the few recommended by UNICEF as pumps benefiting from its VLOM (Village Level Operation and Management
of maintenance) label, in other words, robust pumps that can be fully
maintained locally, either by the community members themselves or by a
technician that they can call out quickly, and which are also produced locally
and selected, managed and maintained by the community. It is designed for heavy
duty use, with a conventional lever action that can serve communities of up to
300 people. Its maximum recommended lift is 45m and the pump is fully corrosion
resistant, the bearing bushes being hot dip galvanized and made of special
plastics. Alternative stainless steel lined cylinders are also available for
aggressive water conditions apart from the mild steel variant. The pump comes
with variable handle settings, which makes it possible to adapt to varying
ground water levels at different times. The spout length and pedestal can be
customized according to different needs.
The assembling and dismantling of the
parts is quite effortless since the foot valve fitted on to the pump can be
easily retracted using a fishing tool. Rubber
centralisers are provided to each connecting rod to prevent internal damage to
uPVC pipes, due to corrosion. 225 mm stroke length of the
handle in afridev hand pump can provide a water discharge of 1350 litres per
hour with an installation depth range between 15 m to 45 m. These hand pumps
have quick release eye & hook tool-less ends on connecting rods with rubber
centralizers facilitate maintenance and protect the riser pipe against internal
wear. Special tools and guided installation manuals are also available
with the afridev hand pumps, which makes the assembling and installation very
easy. Fulcrum & Rod hanger pins are supported on
special grade plastic Bush Bearings, which are easily replaceable. The
uPVC riser pipe, cylinder, plunger & foot valves used in the pump
are light weight and inexpensive. Additionally, rubber centralisers are
provided to each uPVC pipe to prevent external damage, which further lowers the
maintenance and operational costs.
Afridev hand pumps manufactured at Aakash International have a few special
features that distinguish them from other pumps available in the market. A choice of Eye & hook connecting rod or threaded connecting
rod is provided. They are easy to instate and can be accomplished even by women
mechanics in villages. Additionally, quick release Eye & Hook tool-less
ends on Connecting Rods with rubber Centralizers facilitate maintenance and
protect the riser pipe against internal wear. The tools for installation
and maintenance, along with an interactive user manual are provided along with
the hand pump.