Method and device for automatic circulation in waste water...

Details Method and device for automatic circulation in waste water... Method and device for automatic circulation in waste water...

F - Mech Eng,Light,Heat,Weapons

04

D

137/63, 137/78

F04D 29/00 (2006.01) B01F 5/02 (2006.01) B01F 7/00 (2006.01) B01F 15/02 (2006.01) E03F 5/22 (2006.01) F04B 53/10 (2006.01) F04D 29/70 (2006.01)

Patent

CA 2009906

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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