Abstract: The press fitting for a pipe, is provided with a fitting body which has a supporting sleeve with a free end and a pressing sleeve. The pressing sleeve is held substantially concentrically with respect to the supporting sleeve by means of at least one spacer element arranged at the holding end of the pressing sleeve. I the region of the holding end of the pressing sleeve, the fitting body has a locking depression or a locking projection. At the holding end, the cylindrical wall of the pressing sleeve has at least one opening through which a locking element extends to the axial fitting of the pressing sleeve to the fitting body, wherein the locking element projects into the locking depression of the fitting body and ends in the depression, or the locking element engages around or behind the locking projection of the fitting body.

Abstract: A coupling system includes two base bodies, each having an aperture for a fluid, an interior predefined circumferential depression and a locking surface. An adapter piece including an aperture for the fluid has two ends and at least two predefined circumferential depressions, which run at least partially along a circumference of the respective ends, wherein the first base body is associated with the first end of the adapter piece and the second base body is associated with the second end of the adapter piece, wherein in a state in which they are pushed inside each other the circumferential depression associated with the respective end of the adapter piece and the interior circumferential depression of the respective base body are located opposite of each other and form a receiving space. In addition, latching elements are provided to prevent the respective latching element from accidentally sliding out of the associated receiving space.

Abstract: A fitting for a pipe, has a base body and a connecting body, each having a passage for a fluid. Both bodies include contact surfaces that can be slid into each other, including at least one pair of opposing recesses forming a receiving chamber. The fitting has a flexible, substantially incompressible locking element that can be inserted into the receiving chamber for fixing the two bodies together. At least one of the two bodies includes an access chamber extending between an outer surface of the associated body and the receiving chamber. The access chamber connects to and is an extension of the receiving chamber. The locking element includes a stop protrusion at one of its opposite ends for stopping the locking element externally at least one of the two bodies in order to prevent the locking element from unintentionally slipping out of the receiving chamber.

Abstract: The invention relates to a coupling system comprising two base bodies, each of which has an aperture for a fluid, an interior predefined circumferential depression and a locking surface (26). An adapter piece (1) comprising an aperture (9) for the fluid has two ends (2, 3) and at least two predefined circumferential depressions (4), which run at least partially along a circumference of the respective ends, wherein the first base body (21) is associated with the first end (2) of the adapter piece (1) and the second base body (21) is associated with the second end (3) of the adapter piece (1), wherein in a state in which they are pushed inside each other the circumferential depression (4, 5) associated with the respective end (2, 3) of the adapter piece (1) and the interior circumferential depression of the respective base body (21) are located opposite of each other and form a receiving space (22).

Abstract: The press fitting for a pipe is provided with a fitting element which comprises a supporting element onto which a pipe to be connected can be pushed. Furthermore, the press fitting comprises a compression sleeve which has on its circumferential surface a compression region corresponding to the region a pressing tool acts on the compression sleeve during the compression thereof. A plastic ring is situated on the outside of the compression sleeve and is secured thereon against movements in the axial direction of the compression sleeve wherein the plastic ring has at least one axial projection which extends right into the compression region of the compression sleeve and which can be destroyed when the pressing tool acts on the compression sleeve and/or is secured so that it can be separated from the plastic ring.

Abstract: The invention relates to a fitting for a pipe, particularly a plastic pipe or plastic-metal composite pipe, having a base body (12) having a passage (14) for a fluid, a connecting body (16), also comprising a passage (17) for a fluid and that can be releaseably connected to the base body (12), to which a pipe can be connected. Both bodies (12, 16) comprise contact surfaces (26, 28) that can be slid into each other, comprising at least one pair of opposing recesses (30, 32) forming a receiving chamber (34). The fitting further has a flexible and substantially incompressible locking element (44) that can be inserted into the receiving chamber (34) for fixing the two bodies (12, 16) to each other. At least one of the two bodies (12, 16) comprises an access chamber (36, 38) extending between an outer surface (40) of the associated body (12) and the receiving chamber (34). The access chamber (36, 38) connects to the receiving chamber (34) substantially as an extension thereof.

Abstract: The press fitting for a pipe, in particular plastic pipe or plastic-metal composite pipe, is provided with a fitting body (12) which has a supporting sleeve (14) with a free end (16) and a pressing sleeve (18). The pressing sleeve (18) is held substantially concentrically with respect to the supporting sleeve (14) by means of at least one spacer element (42) arranged at the holding end (35) of said pressing sleeve. In the region of the holding end (35) of the pressing sleeve (18), the fitting body (12) has a locking depression (30) or a locking projection. At the holding end (35), the cylindrical wall (34) of the pressing sleeve (18) has at least one opening (32) through which a locking element (20) extends to the axial fitting of the pressing sleeve (18) to the fitting body (12), wherein the locking element (20) projects into the locking depression (30) of the fitting body (12) and ends in said depression, or the locking element (20) engages around or behind the locking projection of the fitting body (12).