Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Hitachi Ltd
Original Assignee
Hitachi Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hitachi LtdfiledCriticalHitachi Ltd
Priority to JP8253676ApriorityCriticalpatent/JPS538805A/en
Publication of JPS538805ApublicationCriticalpatent/JPS538805A/en
PURPOSE: To work an underwater pump automatically to its total head with the underwater pump and pressure tank efficiently acted, by the construction that excessive rise of operating pressures at the upper and lower limits of a pressure switch used for self controlling can be prevented.
COPYRIGHT: (C)1978,JPO&Japio
JP8253676A1976-07-131976-07-13Self controller for automatic underwater motor pump
PendingJPS538805A
(en)