Laundry washing machine and bellow for a laundry washing machine

A laundry washing machine (1) comprising: a casing (10); a tub (11) suspended in the casing (10); an elastically deformable bellow (20), having a ring shaped main portion (21) sealingly connected to the casing (10) and to the tub (11), at an opening (12) thereof, and a projection portion (30), made in one piece with the main portion (21) and radially extending from the main portion (21) to a distal end (31); a detergent tank (17) adapted to receive detergents to be mixed to water before being supplied to the tub (11); a tank duct (18) connected upstream to the detergent tank (17) and having a downstream end (19); a bellow duct (32) formed within the projection portion (30) of the bellow (20), from an inlet mouth (33), formed at the distal end (31) of the projection portion (30) and connected to the downstream end (19) of the tank duct (18), to an outlet mouth (34), formed in the main portion (21) of the bellow (20), at the projection portion (30), and open into the tub (11). The tank duct (18) comprises at le