FITTING WITH INTEGRAL INDICATING RING Russian patent published in 2016 - IPC F16L13/14 

FIELD: machine building.

SUBSTANCE: invention relates to fittings. The fitting includes a casing with end wall and internal support, on which the pipe end can be installed, a shell surrounding the internal support. To fix the pipe end over the internal support the shell includes at least one opening, internal ring pushed over the internal support designed such that to be located between the end wall and pipe end. The internal ring can move between the initial position and position on stop, where the internal ring virtually tightly abuts to the end wall of the fitting casing. The fitting includes the devices to displace the internal ring to the initial position, where the internal ring is visible through at least one opening with return devices, created at least partially by the part not the internal ring.

EFFECT: invention improves reliability of the joint.

8 cl, 3 dwg