Patent ID: 7560021

Claim:
Selector valve in a pressure filter for aquariums or ponds, comprising: a valve body ( 12 ) having a main liquid inlet opening ( 16 ), a secondary inlet opening ( 17 ), an outlet opening ( 18 ) and a discharge opening ( 19 ); a cursor ( 20 ) housed in the valve body ( 12 ), having a passage for the liquid ( 21 ) and being selectively moveable between a first position, corresponding to a filtration mode of the filter ( 11 ), wherein the main liquid inlet opening ( 16 ) is placed in fluid communication with the outlet opening ( 18 ), and a second position, corresponding to the washing mode of the filter ( 11 ), wherein the secondary inlet opening ( 17 ) is in fluid communication with the discharge opening ( 19 ); and a safety valve ( 36 ) included in the cursor ( 20 ) and fluidly communicating with a third inlet opening ( 38 ) for receiving liquid from the filter to protect the pressure filter ( 11 ) in case of superpressure of the liquid.