Why delivery valve is kept open while starting axial flow pump?
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When almost any centrifugal pump is started against a closed discharge valve, the pump head will be higher than normal. ... Pumps that require less shut-off power and torque than at normal flow conditions are usually started against a closed discharge valve
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Mechanisation was one of the large factors responsible for urbanisation and industrial economies. Besides improving production efficiency, mechanisation encourages large scale production and sometimes can improve the quality of farm produce.
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