초록 ▼

A dual containment fitting comprises an intermediate annular body having a bore therethrough and an outside surface including a nose portion at one end and a threaded portion adjacent the nose portion. The bore includes a threaded portion opposite the nose portion, a collar adjacent the threaded por

A dual containment fitting comprises an intermediate annular body having a bore therethrough and an outside surface including a nose portion at one end and a threaded portion adjacent the nose portion. The bore includes a threaded portion opposite the nose portion, a collar adjacent the threaded portion, a sleeve adjacent the collar, and an annular shoulder between the sleeve and collar. An annular fitting body has a bore therethrough and an outside surface including a nose portion at one end that is inserted into a flared end portion of an inner tube, and a threaded portion adjacent the nose portion. The nose portion of the fitting body is inserted within the intermediate body bore and is threadably engaged with the intermediate body bore about respective threaded portions, compressively engaging the flared end between the nose portion and the annular shoulder to form a first attachment fitting. The nose portion of the intermediate body is inserted into a flared end portion of an outer tube disposed concentrically around the inner tube. An annular nut has a bore therethrough and is disposed around the outer tube at the flared end. The nut bore has a threaded portion at one end and a non-threaded portion adjacent the threaded portion having an annular shoulder at an opposite end. The flared end portion of the outer tube is compressively engaged between the nose portion of the intermediate body and the annular shoulder of the nut bore by threadable engagement of the threaded nut bore around a threaded portion of the intermediate body to form a second attachment fitting.

대표청구항 ▼

A dual containment fitting for sealingly joining together the flared ends of concentric inner and outer tubes, the dual containment fitting comprising: an intermediate annular body with first and second ends and having a bore therethrough; an annular fitting body with first and second ends and havin

A dual containment fitting for sealingly joining together the flared ends of concentric inner and outer tubes, the dual containment fitting comprising: an intermediate annular body with first and second ends and having a bore therethrough; an annular fitting body with first and second ends and having a bore therethrough, wherein the fitting body is threadably engaged at its first end within the bore at the first end of the intermediate body, and wherein the flared end portion of the inner tube is compressively engaged between the fitting body and the intermediate body to form a first air- and water-tight seal therebetween; and an annular nut having first and second ends and a bore therethrough, wherein the nut is threadably engaged at its second end about the second end of the intermediate body, and wherein the flared portion of the outer tube is compressively engaged between the intermediate body and the nut to form a second air- and water-tight seal therebetween.