| 摘要 |
<p>A flare-tube assembly is provided that includes a tube (32) having a flare at a forward end thereof which angles outwardly and rearwardly and is generally S-shaped in cross section. The flare-tube assembly also includes an inverted flare fitting (10) which has external threads (18), an opening extending therethrough, and a shoulder (36) encircling the opening at a forward end of the fitting (10). The shoulder (36) has a recess portion (24) near an outer diameter of the shoulder which is inwardly arcuate in cross section. The tube (32) extends through the opening with the shoulder (36) of the fitting (10) facing a rear side (48) of the flare. During installation, the fitting (10) is torqued such that the shoulder (36) of the fitting first engages and compresses an outer portion of the flare to form a seal at the outer portion. Upon further torquing, the shoulder (36) of the fitting (10) engages the entire surface of the flare to compress the entire flare.</p> |
