Abstract: A press fitting arrangement includes a sealing ring to be housed within a bead of a press fitting into which a tube is to be inserted. There is at least one gap between the press fitting together with the sealing ring and the tube which is closed by pressing at least one portion of the press fitting. The sealing ring has at least one first portion along the majority of its circumference. Each first portion of the sealing ring has an outside diameter (SOD1) prior to fitment into the press fitting bead which is larger than the inside bead diameter (BID) and an inside diameter (SID1) prior to the insertion of the tube which is less than the tube outside diameter (TOD). Additionally, the sealing ring has at least one pair of diametrically opposing second portions, each second portion of the sealing ring comprising a recess between the two projections.

Abstract: A pipe fitting arrangement in at least one embodiment comprises a pipe, a housing defining at one end an opening for insertion of an end of the pipe, a metallic grip ring and a sealing ring downstream the grip ring in the insertion direction of the pipe, the location of both the grip ring and the sealing ring between the housing and the pipe being defined by the housing, wherein the grip ring is provided with a first amount of first internal teeth directed toward the pipe in a first direction with a first inclination in the pipe insertion direction for engagement with the pipe, and with a second amount of second external teeth directed towards the housing in a second direction with a second inclination away from the pipe insertion direction for engagement with the housing. Further disclosed herein is a method for forming such a pipe fitting arrangement.

Abstract: A method for inserting a pipe into a socket and for removing the pipe out of the socket by making usage of a tool are provided herein. The pipe is retainable within the socket by teeth of a grip ring placed within the socket. In at least one embodiment, the method comprises (a) inserting the tool at least partly into the socket mouth into which the pipe is to be inserted, (b) extending the internal diameter of the socket mouth at least over a part of its circumference being smaller than the external pipe diameter when inserting the tool, (c) inserting the pipe into the socket mouth through a tool opening, (d) withdrawing the tool out of the socket, and (e) disengaging the tool from the pipe. Also disclosed herein are method elements for pipe withdrawal. The method elements in combination with the tool help avoid damage to the pipe.

Abstract: A press fitting arrangement includes a sealing ring to be housed within a bead of a press fitting into which a tube is to be inserted. There is at least one gap between the press fitting together with the sealing ring and the tube which is closed by pressing at least one portion of the press fitting. The sealing ring has at least one first portion along the majority of its circumference. Each first portion of the sealing ring has an outside diameter SOD1 prior to fitment into the press fitting bead which is larger than the inside bead diameter BID and an inside diameter SID1 prior to the insertion of the tube which is less than the tube outside diameter TOD. Additionally, the sealing ring has at least one pair of diametrically opposing second portions, each second portion of the sealing ring comprising a recess between the two projections.

Abstract: A method for producing a press connection arrangement comprises connecting a body to a socket to form a unit, inserting an end of a tube into at least a part of the unit, and press-connecting the socket onto the tube in the area of a bead provided by the socket to house a sealing element between the socket and the tube and obtain a press connection arrangement being fluid tight. The element of connecting the body to the socket further comprises screwing a thread of the body onto a thread of the socket and, at least partially deforming the mating threads to create an anti-rotational lock. A press connection arrangement produced by such a method is also defined.