Patent ID: 6457748
Filing Date: 2002-10-01
Classification: F16L

Abstract:
A pipe coupling for coupling together two pipes in a fluid-tight manner comprising:a casing arrangement defining a longitudinal axis, said casing arrangement including an outer tubular casing and an inner tubular casing being disposed generally coaxially within and surrounded by said outer casing, said inner and outer casings each defining therein an axially extending gap, said gaps being circumferentially aligned with one another and a bridging component extends circumferentially across the respective said gaps; an annular sealing gasket disposed within said casing arrangement to provide a fluid-tight seal between respective ends of the pipes; a tensioning member which tightens the casing arrangement around the sealing gasket to seal same against the pipe ends; and a layer of fire-resistant thermal-insulating material sandwiched between said inner and outer casings, said layer extending circumferentially about said inner casing and along the entire axial extent thereof such that said inner and outer casings are thermally insulated from one another.