Abstract: A device for forming a press-fit connection with a tube, the device including a socket for insertion of an end section of the tube. The socket includes a wall having at least a first section extending in axial direction, the first section having at least one annular bead providing a housing for at least partially accommodating a sealing element within the socket, and two second sections. Each second section is located immediately adjacent to a bead and commences at a position along an axis of the socket at which a magnitude of a derivative of an outside radius of the wall with respect to the axial position has a local minimum. In addition, each second section has, for every azimuthal position, an inside radius with a minimum at an axial position where the first and second sections terminate and the minimum radius of each second section is smaller than the inside radius at the axial position where the second section commences.

Abstract: A tool (20) for a pipe fitting arrangement in which a pipe is retainable arranged within a housing (1) by teeth (13) of a grip ring (12) placed within the housing, the tool comprising: first engagement means for engaging the pipe, said first engagement means having at least one part (12) adapted to enter the housing around the pipe in order to force the teeth of the grip rin out of engagement with the pipe, second engagement means for engaging the first engagement means as well as the housing in order to locate the housing relative to the tool, and a handle connected or connectable with the second engagement means. The first engagement means being connected to the second engagement means via at least one first joint being in form of a pivot (24f) and/or at least one first spring means (38) in order to be at least partly displaceable relative to the second engagement means, and a method using such a tool.