Patent ID: 7942455

Claim:
Device for connecting a fluid circulating line to a refractory element, comprising: (a) a body having a longitudinal axis, and having a radial extent from the longitudinal axis, wherein the body comprises a tubular part and a base, wherein the tubular part and the base each have a cylindrical surface, wherein the cylindrical surface of the base is unthreaded, wherein the body is traversed by a longitudinal canal, wherein the cylindrical surface of the tubular part has a threaded portion distal to the base and an unthreaded portion proximal to the base, wherein the cylindrical surface of the tubular part extends a radial distance of d from the longitudinal axis of the body, and wherein the base extends a radial distance of at most the sum of d and a radial distance e from the longitudinal axis of the body; (b) a tightening gasket comprising an interior cylindrical surface configured to accommodate the unthreaded portion of the cylindrical surface of the tubular part, and comprising an exterior cylindrical surface extending a radial distance of at most the sum of radial distances d and e from the longitudinal axis of the body, wherein the tightening gasket comprises a refractory material; (c) a nut comprising an interior threaded surface configured to accommodate the threaded portion of the cylindrical surface of the tubular part; (d) a barrier disposed between the tightening gasket and the body, and between the tightening gasket and the nut; and (e) a spacing washer comprising an interior cylindrical surface configured to accommodate the threaded portion of the cylindrical surface of the tubular part, and with an exterior cylindrical surface extending a radial distance of at most the sum of radial distances d and e from the longitudinal axis of the body.