Pull-up by torque fitting with female threaded nut and integral dynamic wedge

摘要

A fitting is provided that may optionally be pulled-up to its final assembled condition by torque rather than by turns. In one embodiment, at least one fitting component includes a structure that facilitates pull-up by torque. The structure may take a wide variety of different forms.

主权项

1. A conduit fitting comprising:
a first threaded fitting component comprising a male threaded body having an external surface and an internal surface; at least one conduit gripping device; a second threaded fitting component comprising a female threaded nut adapted to be joined to said first threaded fitting component to cause said at least one conduit gripping device to grip and seal when the conduit fitting is pulled-up on a conduit end, said female threaded nut comprising an engagement surface that is radially outward of female threads of said female threaded nut and that engages a portion of said external surface of said male threaded body when the conduit fitting is pulled-up, at least one of said portion of said external surface of said male threaded body and said engagement surface of said female threaded nut comprises an incline, wherein upon pull-up of the conduit fitting contact of said portion of said external surface of said male threaded body with said engagement surface of said female threaded nut forces said female threaded nut radially inward.