Fitting with Locking Ring for Non-Detachable Connection to at Least One Pipe

A fitting for connection to at least one pipe,

• with a base body,
• with a retaining element, the retaining element having latching elements for latching with a corresponding latching element of the pipe to be connected, and
• with a sealing element,
• wherein the fitting has a locking ring,
• wherein the locking ring in a first axial position allows a movement of the retaining element in radial direction and
• wherein the locking ring in a second axial position prevents a movement of the retaining element in the outwards radial direction,
• characterised in
• that the axial displacement of the locking ring from the first axial position to the second axial position is irreversible,
• wherein the irreversibility is achieved by a locking element which acts in the second axial position of the locking ring between the locking ring and the base body and is non-releasable, and
• wherein the locking ring can only be turned back by a partial destruction of the locking element.