Aligned and axially loaded pig injector valve and method of...

Details Aligned and axially loaded pig injector valve and method of... Aligned and axially loaded pig injector valve and method of...

F - Mech Eng,Light,Heat,Weapons

16

L

F16L 55/07 (2006.01) F16L 15/00 (2006.01) F16L 23/12 (2006.01) F16L 55/46 (2006.01)

Patent

CA 2593448

A method of attaching a tubular member, having an attachment flange defining a plurality of bolt holes, to a valve fitting comprising a valve body having a loading surface and a valve flange. The valve flange includes a flange, defining a plurality of bolt holes, for engaging the attachment flange and a plurality of axial loading members movable between a first retracted position and a second extended position protruding to bear on the loading surface. The method includes threading a threaded end of the valve flange onto a threaded end of the valve body, rotating the valve flange until the bolt holes of the valve flange are geometrically aligned with the bolt holes of the tubular member and moving at least one of the axial loading members into its second extended position to bear on the loading surface to impart an axial tensile force between the valve body and valve flange.

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