Hose coupling incorporates male part (10) and female part (11) being provided with means (16, 117), which in cooperation with a slide (14) axially displaceable on the female part renders possible pressure relief at disconnection. One of these means in the coupling is constituted by an angular locking body (117) one portion (20) of which is insertable in an axial groove (23) in the female part and has such a length that always at least some part thereof is surrounded by the sleeve (14). The other inwardly directed part (21) of the locking body, has such a length that it extends into the groove (15) of the male part when the locking body is influenced by the sleeve (14).