A coupling arrangement having a first coupling body comprising at least two segments (21, 23), one proximal segment proximal to a front end and one distal segment in a distance from the front end, being configured as a receiving coupling body of the coupling arrangement, wherein catching means (60, 64) comprising first catching means and second catching means are arranged at its proximal segment, a second coupling body comprising at least two segments (41, 43), one proximal segment proximal to a front end and one distal segment in a distance from the front end, being configured as an insertable coupling body of the coupling arrangement, wherein third catching means are arranged at its distal segment, and wherein a sealing groove being configured at the proximal segment, a seal being arranged in the sealing groove and a coupling bracket comprising at least a bracket part, being configured to cover at least a part of one of the coupling bodies inserted into the other of the coupling bodies, wherein forth catching means are arranged at its bracket part for connection to the receiving coupling body, with (i) one of the coupling bodies being insertable with a body portion into a body portion of the other of the coupling bodies with its front end through a front end of the receiving coupling body, (ii) the coupling bodies (20, 40) providing corresponding catching means, which are said first catching means and said third catching means, for establishing a connection between the coupling bodies (20, 40), the coupling bodies (20, 40) providing a mutual first geometrical position for introducing the insertable coupling body into the receiving coupling body, (iii) the coupling bodies (20, 40) providing a mutual second geometrical position for locking the catching means (60, 80) in order to establish the connection between the coupling bodies (20, 40), (iv) the coupling bracket being configured to cover at least a part of one of the coupling bodies being inserted into the other of the coupling bodies, (v) at least the receiving one of the coupling bodies providing said second catching means 64) for establishing a connection to the coupling bracket, (vi) the coupling bracket providing corresponding catching means, which are said forth catching means, for establishing a connection between the coupling bracket and at least the receiving one of the coupling bodies, wherein in the first geometrical position one of the coupling bodies is tilted with an axis against an axis of the other coupling body for introducing the insertable coupling body into the receiving coupling body, wherein in the second geometrical position the axis of one of the coupling bodies is parallel to the axis of the other coupling body for locking the catching means (60, 80) of the coupling bodies (20, 40). (i) one of the coupling bodies being insertable with a body portion into a body portion of the other of the coupling bodies with its front end through a front end of the receiving coupling body, (ii) the coupling bodies (20, 40) providing corresponding catching means, which are said first catching means and said third catching means, for establishing a connection between the coupling bodies (20, 40), the coupling bodies (20, 40) providing a mutual first geometrical position for introducing the insertable coupling body into the receiving coupling body, (iii) the coupling bodies (20, 40) providing a mutual second geometrical position for locking the catching means (60, 80) in order to establish the connection between the coupling bodies (20, 40), (iv) the coupling bracket being configured to cover at least a part of one of the coupling bodies being inserted into the other of the coupling bodies, (v) at least the receiving one of the coupling bodies providing said second catching means 64) for establishing a connection to the coupling bracket, (vi) the coupling bracket providing corresponding catching means, which are said forth catching means, for establishing a connection between the coupling bracket and at least the receiving one of the coupling bodies,