A kit (1) for connecting to a processing container (R) a device (P) for feeding a liquid or semi-liquid food product, comprising at least: - an internally hollow pipe (2) having a first end (2A) and a second end (2B), wherein at least one between the first and the second end (2A, 2B) comprises an enlarged, external terminal portion (3)； - a receiving element (5) provided with a hole (7) for receiving at least the enlarged, external terminal portion (3) at one end (2A, 2B) of the pipe (2) and with an abutment (6) for stopping the end (2A, 2B) of the pipe (2) inside the hole (7)； - means (80) for pushing and locking the enlarged, external terminal portion (3) at the end (2A, 2B) inside the receiving hole (7) in order to allow locking the enlarged, external terminal portion (3) against the abutment (6). [Figure 3]
