Method and device for automatic circulation in a waste water pump station
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United States of America Patent
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-
Aug 14, 1990
Grant Date -
N/A
app pub date -
Nov 29, 1989
filing date -
Feb 21, 1989
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The pressure side of the pump unit is provided with a valve (6) which during certain periods opens a connection between the pump and the pump station to obtain circulation in the station. The valve (6) is opened and closed by a valve ball (9) which is controlled by the pump pressure.
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