FACE SEALED FITTINGS

摘要

Aspects of the invention are directed to a kit for use with a tube terminating in a flange, where the flange defines an outwardly projecting flange shoulder and is characterized by a maximum external flange diameter. The kit comprises a pairing ring, a nipple, and a nut. The pairing ring defines a pairing ring engagement feature. The nipple defines a nipple engagement feature and external nipple threads, and is characterized by a minimum internal nipple diameter greater than the maximum external flange diameter. Lastly, the nut defines internal nut threads and an inwardly projecting nut shoulder, and is characterized by a minimum internal nut diameter greater than the maximum external flange diameter. The kit is adapted to be configured such that, simultaneously: (i) the pairing ring surrounds a portion of the tube adjacent to the flange; (ii) the pairing ring abuts the outwardly projecting flange shoulder; (iii) the pairing ring abuts the inwardly projecting nut shoulder; (iv) the nipple at least partially surrounds the outwardly projecting flange shoulder; (v) the nipple at least partially surrounds the pairing ring; (vi) the nut at least partially surrounds the pairing ring; (vii) at least a portion of the internal nut threads engage at least a portion of the external nipple threads; and (viii) the nipple engagement feature engages the pairing ring engagement feature so as to inhibit relative rotation between the nipple and the pairing ring.

主权项

1. A kit for use with a tube terminating in a flange, the flange defining an outwardly projecting flange shoulder and characterized by a maximum external flange diameter, the kit comprising:
a pairing ring, the pairing ring defining a pairing ring engagement feature; a nipple, the nipple defining a nipple engagement feature and external nipple threads, and characterized by a minimum internal nipple diameter greater than the maximum external flange diameter; and a nut, the nut defining internal nut threads and an inwardly projecting nut shoulder, and characterized by a minimum internal nut diameter greater than the maximum external flange diameter; wherein the kit is adapted to be configured such that, simultaneously:
the pairing ring surrounds a portion of the tube adjacent to the flange;the pairing ring abuts the outwardly projecting flange shoulder;the pairing ring abuts the inwardly projecting nut shoulder;the nipple at least partially surrounds the outwardly projecting flange shoulder;the nipple at least partially surrounds the pairing ring;the nut at least partially surrounds the pairing ring;at least a portion of the internal nut threads engage at least a portion of the external nipple threads; andthe nipple engagement feature engages the pairing ring engagement feature so as to inhibit relative rotation between the nipple and the pairing ring.