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Hitachi Ltd
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Hitachi Ltd
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Application filed by Hitachi LtdfiledCriticalHitachi Ltd
Priority to JP13621875ApriorityCriticalpatent/JPS5260414A/en
Publication of JPS5260414ApublicationCriticalpatent/JPS5260414A/en
Structures Of Non-Positive Displacement Pumps
(AREA)
Abstract
PURPOSE: Provision of a well pump having a guide pipe attached at the extreme outer end of a delivery inner piping and opened in a pressure tank, which guide pipe is in the from of a tapered tube with a dismereically enlarged opening, so that water under pressure discharged from the guide pipe be reduced in velocity to lower noises.