Coupling device for making a permanent pipe connection

Details Coupling device for making a permanent pipe connection Coupling device for making a permanent pipe connection

F - Mech Eng,Light,Heat,Weapons

16

L

285/62

F16L 13/14 (2006.01) B21D 39/04 (2006.01)

Patent

CA 1239956

ABSTRACT In this pipe connection, the pipe end part is pressed, as a result of cold-forming in zones, by means of a press ring to be displaced axially, to form a positive leak-proof connection with a connection piece inserted into the pipe end part and belonging to a pipe fitting . A sleeve to be pushed onto the pipe end part is provided with an annular outer bead and, then the press ring is pressed on, is deformed in such a way that the sleeve material is displaced radially inwards in the bead zone , the pipe end part and connection piece acquiring an annular recess . Moreover, the press ring has at its rear end an annular inner bead which at the same time displaces the sleeve material radially inwards at the rear sleeve end, as a result of which further pressing takes place at the end of the connection piece . The gap between the pipe and connection piece is thus closed, so that no crevice corrosion can occur. (Figure 1)

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