Patent ID: 6685237
Filing Date: 2004-02-03
Classification: F16L,Y10S

Abstract:
A retrofit fitting to prevent relative rotation of a pair of axially aligned face seals, said face seals facing toward each other to make abutting contact with an intervening washer, one of said face seals being formed on an externally threaded male nut, the other face seal being formed on a head having a shoulder, said head being embraced by a torque cage having a lateral shoulder and a pair of blades, a female nut being so proportioned and arranged as to press said shoulder of said cage against said head, said retrofit fitting comprising:a tubular adaptor comprising a tubular body having a central axis; an axial internal thread inside said adaptor proportioned to engage the thread of the male nut; an axial external thread on the outside of said adaptor proportioned to be engaged by the internal thread of the female nut; and a plurality of axially extending blades extending from said tubular body, said blades having axially extending edges so disposed and arranged as to engage respective blades on said torque cage, thereby preventing relative rotation between said blades on said adaptor and on said torque cage, and thus between said face seals.