Couplings for non-ferrous pipe

F - Mech Eng,Light,Heat,Weapons – 16 – L

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285/53

F16L 19/08 (2006.01) F16L 47/16 (2006.01)

Patent

CA 1202046

COUPLINGS FOR NON-FERROUS PIPE ABSTRACT OF THE DISCLOSURE A non-ferrous pipe coupling comprises tubular threaded male and female coupling elements attached to ends of respective pipe sections. The male element rerminates in a cylindrical non-threaded, non-tapering scaling surface adjacent its threads and the female coupling element, which may be filament-wound, includes an internal sealing sleeve or liner with a web that provides a lip seal around the cylindrical sealing surface of the male elements. The web is urged into sealing engagement with the cylindrical surface by fluid pressure within the coupling. The liner precludes egress of fluid from within the coupling through the female coupling element.

431074

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