Patent ID: 9115830
Filing Date: 2015-08-25
Classification: F16L

Abstract:
1. A conduit assembly comprising: an outer pipe; an inner pipe extending through the outer pipe, wherein an inner conduit is defined within the inner pipe, and an outer conduit is defined between the inner pipe and the outer pipe; an end wall fixed to the inner pipe, and extending outwardly to be fixed to the outer pipe to define a liquid-tight seal between the inner pipe and the outer pipe at a first end of the conduit assembly; a slip coupling outer element fixed to the outer pipe at a position spaced axially from the conduit assembly first end, the outer element having a circumferential first groove; a slip coupling inner element fixed to the inner pipe to extend within the slip coupling outer element, and having a circumferential outwardly facing land; and an elastomeric seal engaged within the slip coupling outer element first groove and engaging the slip coupling inner element land in a liquid-tight seal, such that thermal expansion and contraction of the conduit assembly causes the slip coupling inner element to move axially with respect to the slip coupling outer element while retaining a liquid tight seal therebetween.