A filtering device (100, 300) configured to filter a fluid, the filtering device (100, 300) comprising: a housing defining: at least one inlet opening; first and second bores (104-1, 104-2); at least one first inlet channel (118, 118) extending from the at least one inlet opening to the first bore and at least one second inlet channel extending from the at least one inlet opening to the second bore; first and second outlet channels (120, 120) in communication with the first and second bores (104-1, 104-2), respectively; and first and second backflush channels (132, 132); first and second pistons (106, 106) movably disposed in the first and second bores (104-1, 104-2), respectively, the first piston (106) defining a first cavity (109) therein that is in fluid communication with the at least one first inlet channel (118) and the first outlet channel (120) when the first cavity (109) is in a production mode, and the second piston (106) defining a first cavity (109) therein that is in fluid communication with the at least one second inlet channel (118) and the second outlet channel (120) when the first cavity (109) of the second piston (106) is in the production mode; a first filter element (114) disposed in the first cavity (109) of the first piston (106), and a second filter element (115) disposed in the first cavity (109) of the second piston (106); and a backflush valve (134, 134), wherein the first backflush channel (132) extends between the first bore and the backflush valve (134, 134) and the second backflush channel (132) extends between the second bore and the backflush valve (134, 134); characterized in that the backflush valve (134, 134) comprises an inner surface that defines a valve chamber therein that is configured to fill with the fluid such that, when the filtering device (100, 300) is operated in a backflush mode, the backflush valve (134, 134) is adapted to: 1) compress fluid from the valve chamber into the first cavity (109, 109) via the first backflush channel (132) so as to increase a pressure of the fluid in the first cavity (109,109) and 2) open so as to discharge the compressed fluid from the first cavity (109, 109) out of the backflush valve (134, 134). a housing defining: at least one inlet opening; first and second bores (104-1, 104-2); at least one first inlet channel (118, 118) extending from the at least one inlet opening to the first bore and at least one second inlet channel extending from the at least one inlet opening to the second bore; first and second outlet channels (120, 120) in communication with the first and second bores (104-1, 104-2), respectively; and first and second backflush channels (132, 132); at least one inlet opening; first and second bores (104-1, 104-2); at least one first inlet channel (118, 118) extending from the at least one inlet opening to the first bore and at least one second inlet channel extending from the at least one inlet opening to the second bore; first and second outlet channels (120, 120) in communication with the first and second bores (104-1, 104-2), respectively; and first and second backflush channels (132, 132); first and second pistons (106, 106) movably disposed in the first and second bores (104-1, 104-2), respectively, the first piston (106) defining a first cavity (109) therein that is in fluid communication with the at least one first inlet channel (118) and the first outlet channel (120) when the first cavity (109) is in a production mode, and the second piston (106) defining a first cavity (109) therein that is in fluid communication with the at least one second inlet channel (118) and the second outlet channel (120) when the first cavity (109) of the second piston (106) is in the production mode; a first filter element (114) disposed in the first cavity (109) of the first piston (106), and a second filter element (115) disposed in the first cavity (109) of the second piston (106); and a backflush valve (134, 134), wherein the first backflush channel (132) extends between the first bore and the backflush valve (134, 134) and the second backflush channel (132) extends between the second bore and the backflush valve (134, 134); characterized in that the backflush valve (134, 134) comprises an inner surface that defines a valve chamber therein that is configured to fill with the fluid such that, when the filtering device (100, 300) is operated in a backflush mode, the backflush valve (134, 134) is adapted to: 1) compress fluid from the valve chamber into the first cavity (109, 109) via the first backflush channel (132) so as to increase a pressure of the fluid in the first cavity (109,109) and 2) open so as to discharge the compressed fluid from the first cavity (109, 109) out of the backflush valve (134, 134). 1) compress fluid from the valve chamber into the first cavity (109, 109) via the first backflush channel (132) so as to increase a pressure of the fluid in the first cavity (109,109) and 2) open so as to discharge the compressed fluid from the first cavity (109, 109) out of the backflush valve (134, 134).