Press-in connecting piece for pipe connection and tool for a press-in connecting piece
A press-in connecting piece for connecting a branch pipe to a pipe in the region of a branch opening. The connecting piece includes a pipe adapter having an inner opening, and a press-in nozzle having a pipe socket, wherein the pipe adapter has a sealing surface for resting in a sealing manner on the outer wall of the pipe, wherein the pipe socket has a tapering end portion remote from the pipe adapter.
1. A press-in connecting piece for connecting a branch pipe to a pipe in the region of a branch opening,
comprising a pipe adapter having an inner opening, and
a press-in nozzle having a pipe socket,
wherein the pipe adapter has a sealing surface for resting on and defining a seal with an outer wall of the pipe,
wherein the pipe socket has a tapered end portion remote from the pipe adapter,
wherein the pipe socket has a cylindrical portion, and
wherein the pipe socket is configured such that the tapered end portion is configured to be beaded by folding over inwards toward a central longitudinal axis of the pipe socket in a region between the tapered end potion and the cylindrical portion and subsequently radially widened by means of a tensile force acting on the end portion in a direction of the pipe adapter, and the press-in nozzle and the pipe adapter are drawn against the pipe.
2. The press-in connecting piece according to claim 1 , wherein the pipe adapter and the press-in nozzle are formed in one piece.
3. The press-in connecting piece according to claim 1 , wherein
the pipe adapter and the press-in nozzle are configured in two pieces,
the press-in nozzle has a flange and
the pipe adapter has a contact surface which is adapted to the flange of the press-in nozzle and is arranged opposite the sealing surface.
4. The press-in connecting piece according to claim 1 , wherein the tapered end portion of the pipe socket is at least partly conical.
5. The press-in connecting piece according to claim 1 , wherein the pipe socket has a plurality of openings in a region of the tapered end portion.
6. The press-in connecting piece according to claim 5 , wherein the plurality of openings extend in a longitudinal direction into both a region of the cylindrical portion of the pipe socket and the region of the tapered end portion.
7. The press-in connecting piece according to claim 5 , wherein the plurality of openings extend in a longitudinal direction.
8. A system comprising a press-in connecting piece according to claim 1 and a tool for fastening a press-in connecting piece on a pipe,
wherein the tool has a draw mandrel which has a shank and a forming portion with a greater external diameter than the shank, and
wherein the external diameter is smaller than the internal diameter of the pipe socket of the press-in nozzle.
9. The system according to claim 8 ,
wherein a shoulder for resting on the tapered end portion of the press-in nozzle is arranged between the shank and the forming portion.
10. The system according to claim 8 ,
wherein a guide adapter, connectable to the press-in nozzle, having an inner guide surface is provided to guide the draw mandrel.
11. The system according to claim 8 ,
wherein a clamping sleeve is provided for pushing over the draw mandrel, and
on the end remote from the forming portion, the draw mandrel has an external thread to screw thereon a threaded nut.
12. The system according to claim 11 ,
wherein the clamping sleeve has an external thread to screw thereon a threaded nut.