The Consallen hand pump shown above was installed in Uganda 1992.
It is one of over 1500 used in a successful, sustainable, and on-going programme
run by the Busoga Trust in Busoga and Luwero Dioceses in Uganda, East Africa.
The pump shown here was installed on a sand filled hand dug well with a
4-inch plastic pipe lining. The scheme was started in 1983 using
Consallen pumps supplied by UNICEF, who encouraged the then Government to adopt
the design as their 'standard' pump. The programme has continued to use the same
product because it has consistently performed well and economically, with the 1983
pumps still working, after 20 years of daily use.
Maintenance of this pump, including spares consumption and fitting amounts to
about US$ 20 a year, of which, 20% accounts for the actual spare parts, and the
remainder in the preventative maintenance system. It serves from 250 to 500 people,
so the cost is affordable in any society. This is only possible because the pump
is engineered to a quality suited to the very considerable task.
INTRODUCTION
The Consallen 'community' high performance hand pump, designed in 1976 and now in the
30th year of
continuous manufacture. 30 years of years of continual development has
improved both the performance and the methods of manufacture still further.
We have developed a unique method of low cost and effective total maintenance,
based on the circuit rider concept, which supports the pump when it is used as
the sole source of clean drinking water for beteen 250 and 500 people. This duty
requires that between 6,000 and 12,000 litres of water is sustainably pumped per
day, every day, without breakdown or failure.
Economical because it will reliably serve more people than the competition. Competing (cheaper)
pumps will only reliably serve 100 people or less. Immediately the Consallen is less
expensive to employ in terms of both first cost and in the cost of wells. This
fact renders the Consallen pump HIGHLY COMPETITIVE for all community water projects.
Fewer pumps and wells required to reliably serve communities of 250/350 people.
With the ability to maintain a quality permanent pump like the Consallen at reasonable
cost, ($5 to $10 a year) the useful life is indefinite. This is based on
an amount of work done of 200,000 litre-metres per day. A full discussion
of what this means is given in the Specification, for which there is a link at
the top of this page. Essentially it means pumping perhaps 10,000 litres
(10 cubic metres or tons) from 20 metres depth, or the product of litres per day
and any other pumping depth up to about 60 metres (200 feet).
Our experience in the permanent operation and maintenance of Consallen hand pumps
is available on request. We have examples of use in Liberia for over 25
years, Uganda and in Zambia of over 20 years - with independent referees.
The original and still the only hand pump which uses entirely STANDARD spare
parts, obtainable from Engineers' Merchants everywhere. All wearing components
like piston seals, bearings, bolts and O-rings are standard commercially available
spares used and stocked for industrial use all over the world. These spares
are also available by mail order and from merchants in many countries, as well as
from Consallen at the address given below.
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FEATURES
Long life pumps, easily maintained, spares universally available, from
Enginerers' and Agricultural Merchants everywhere giving really good long term
VALUE. All major components such as rodding and rising main are permanent
and not subject to rust or corrosion. Only small affordable items required
as consumable spares. The high quality ensures that they last a long time.
See the spares section and details of mail order whereby spares can be delivered
by mail to any village in Africa.
The welded steel pump head is 'hot dip' galvanised after fabrication for
strength and resistance to corrosion. We use high tech laser technology for
accurate fabrication which contributes to the great strength and durability of
this important item.
The Consallen will pump from up to 60 metres below ground level, but will
also perform just as satisfactorily in shallow wells.
One full stroke of the positive displacement cylinder is 0.33 litres.
Everything below ground is entirely corrosion proof, being made of stainless
steel and plastics with brass and rubber elements.
Pumping cylinders are fullu honed seamless drawn brass with brass pistons and industry
standard hydraulic polyurethane piston seals with matching wear rings. For deep
applications, honed stainless steel cylinders are available.
Three Rising Mains (drop pipes) types are offered. In addition to our
traditional and well proven ABS pipe, we offer MDPe (polyethylene) alone, and
thin-wall Stainless Steel lined with MDPe. The liner acts as permanent protection
to the stainless steel against abrasion by the rodding system, and provides
the means of sealing the pipe joints. Also under development is an extractable
version based on the use of 63mm HDPe site welded into a bendable single length.
The standard cylinder and rising main may be comfortably installed in a
borehole diameter of only 55mm, which can lead to big savings that may easily
be greater than the cost of the pump.
Handle fitted with three industrial standard deep groove ball bearings with
two rubber seals, centres and retaining bolts in stainless steel. The
housings are push broached for absolute consistency and to allow the uncomplicated
field replacement of bearings by pushing them out from one side. The new
ones can as simply be pushed in again using hand methods in the field.
Installation and maintenance using a simple 'bicycle' type tool kit weighing 1.5 Kg only.
Speak to us about low maintenance costs and systems to deliver assured and
continuous availability with zero down-time, and a spares system to match, as
mentioned in the Introduction.
Mail order spares delivery option world wide or in country; ask for
details. We will also provide details of your nearest local Engineers'
Merchant on request.
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DEVELOPMENT PHILOSOPHY
No design can, or indeed should, remain static, and we have developed the pump
design over the years since production began in 1976. Improved materials
and manufacturing methods have been introduced as they became available, but we
have also ensured that no developments have made earlier models redundant.
All current and earlier versions of the Consallen hand pump are entirely spares
compatible. All current spares and all structural components will fit all
Consallen hand pumps of whatever age or year of manufacture.
We intend to continue this policy, and all further development will also ensure
that whatever different methods of manufacture or materials are used, spares will
always fit retrospectively. The Spares are all STANDARD - of course.
