Hand Pumps Published under the joint sponsorship of the United Nations Environment Programme

A state of the art report. Topics discussed include rationale for use of hand pumps, history of hand pumps, description of various types of hand pumps (including reciprocating, diaphragm, rotary, helical rotary, bucket, chain, windlass, and various traditional low lift, slowmoving water lifting devices used since ancient times). The principles of operation; nomenclature; hydraulic, struct:lral, and energy analysis; and the design of each component of reciprocating hand pumps are described with examples. Also administration of hand pump programmes with emphasis on installation and maintenance practices. Recent handpump research and indigenous pumps manufactured with plastic, steel, wood, and bamboo components. A final chapter described manufacture of pumps in foundries, machine shops, and using intermediate technology. Key words: Hand pumps, rural water supply, developing countries, reciprocating pumps, appropriate technology, hand pump design, hand pump maintenance, hand pump manufacture, hand pump research and development