Device and method for filtering a fluid circulating in a plumbing and heating system

A device (1) for filtering a fluid circulating in a plumbing and heating system, said device (1) comprising a body (2) of the device which defines therewithin a filtration chamber (3) that is destined to have a fluid to be subjected to filtration pass through it, said body being provided with:

• a first inlet/outlet opening (10), which sets said filtration chamber (3) in communication with the outside of the device and that is configured to be associated with a line so as to receive therefrom, or to send thereto, fluid entering, or exiting from, said body of the device;
• a second inlet/outlet opening (20), which sets said filtration chamber (3) in communication with the outside of the device and that is configured to be associated with a respective line so as to receive therefrom, or to send thereto, fluid incoming to, or exiting from, said body of the device;
• a third inlet/outlet opening (30), which sets said filtration chamber (3) in communication with the outside of the device and that is configured to be associated with a respective line so as to receive therefrom, or to send thereto, fluid incoming to, or exiting from, said body of the device;
• the device being configured to bring about a passage of fluid through said filtration chamber (3), in a selective manner according to a plurality of operative configurations, from one opening among said first inlet/outlet opening (10), said second inlet/outlet opening (20), and said third inlet/outlet opening (30) to another opening among said first inlet/outlet opening (10), said second inlet/outlet opening (20), and said third inlet/outlet opening (30),
• the device further comprising filtering members (40) that are at least partially housed inside said filtration chamber (3), or associated with said body (2) of the device, and operatively interposed between said first inlet/outlet opening, said second inlet/outlet opening and said third inlet/outlet opening to carry out filtering of the fluid passing through the filtration chamber;
• wherein said filtering members (40) comprise at least one filtering septum (41) configureds to perform a mechanical separation of substances and solid particles present in the fluid to be treated from the fluid in which they are suspended, said filtering septum (41) being arranged inside said filtration chamber (3) so as to subdivide the filtration chamber into a first half-chamber (8) and a second half-chamber (9), wherein:
• the first half-chamber (8) is in fluid communication with the first inlet/outlet opening, without passage through the filtering septum;
• the second half-chamber (9) is in fluid communication with the second inlet/outlet opening and with the third inlet/outlet opening, without passage through the filtering septum;
• in such a manner that in each one of said plurality of operative configurations, to pass from said first half chamber (8) to said second half-chamber (9), or vice versa, the fluid transiting in the filtration chamber (3) passes through said filtering septum (41).