High pressure gas fitting with non-rotatable features

摘要

A non-rotational fitting assembly (10; 110; 210) is provided to prevent torsional forces of a nut (12, 112; 212) from being transmitted to a sealing face (16; 26; 246) of a fitting component (12; 22; 248). The assembly (10; 110; 210) includes at least one fitting component (22; 248) having a bearing face (28; 246) aligned orthogonal to the axis of the fitting component (22; 248). The assembly (10; 110; 210) also includes a nut (12; 112; 212) having a bearing face (36; 118) aligned orthogonal to the threads of the nut (26; 112; 212) and dimensioned for engagement with the bearing face (28; 246) of the fitting component (12; 22; 248). The assembly (10; 110; 210) further includes a smooth planar metallic bearing member (60; 132) for disposition adjacent the bearing face (28; 246) of the fitting component (12; 22; 248) and a smooth planar slip member (50; 134) disposed between the bearing member (60; 132) and the bearing face (36; 118) of the nut (12; 112; 212) for substantially isolating torsional forces of the nut (12; 112; 212) from the bearing face (36; 118) of the fitting component (12; 22; 248).