Filtering group comprising: a connection structure having a first input coupling to be placed in communication with a supply conduit of an external fluidic system and an output coupling to be placed in communication with an output conduit of the system, the first input coupling being oriented with respect to the output coupling according to a first orientation; a filter body, connected to the connection structure and in fluid communication with the output coupling, configured to retain particles present in the fluid flowing through the filter body, a ball valve housed in the connection structure and such as to assume a first position in which the first input coupling is placed in fluid communication with the filter body and a second position in which fluid communication between the first input coupling and the filter body is interdicted, characterised by the fact that: the connection structure further comprises a second input coupling to be placed in communication with the supply conduit as an alternative to the first input coupling and oriented, with respect to the output coupling, in accordance with a second orientation, different from the first orientation; the ball valve is configured so that in the first position the second input coupling is placed in fluid communication with the filter body and in the second position the fluid communication between the second input coupling and the filter body is interdicted. a connection structure having a first input coupling to be placed in communication with a supply conduit of an external fluidic system and an output coupling to be placed in communication with an output conduit of the system, the first input coupling being oriented with respect to the output coupling according to a first orientation; a filter body, connected to the connection structure and in fluid communication with the output coupling, configured to retain particles present in the fluid flowing through the filter body, a ball valve housed in the connection structure and such as to assume a first position in which the first input coupling is placed in fluid communication with the filter body and a second position in which fluid communication between the first input coupling and the filter body is interdicted, characterised by the fact that: the connection structure further comprises a second input coupling to be placed in communication with the supply conduit as an alternative to the first input coupling and oriented, with respect to the output coupling, in accordance with a second orientation, different from the first orientation; the ball valve is configured so that in the first position the second input coupling is placed in fluid communication with the filter body and in the second position the fluid communication between the second input coupling and the filter body is interdicted. the connection structure further comprises a second input coupling to be placed in communication with the supply conduit as an alternative to the first input coupling and oriented, with respect to the output coupling, in accordance with a second orientation, different from the first orientation; the ball valve is configured so that in the first position the second input coupling is placed in fluid communication with the filter body and in the second position the fluid communication between the second input coupling and the filter body is interdicted.