| http://www.w3.org/ns/prov#value | - Fuel pumps for internal combustion engines commonly comprise a diaphragm which is operated in one direction by means of an electro-magnet and in the other direction by a spring, the pump also including a valve arrangement and contacts controlling the current supply to the magnet, such that the diaphragm is reciprocated to effect pumping of the fuel until the pressure on the delivery side reaches a
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