Loose flange pipe joint
AssigneeNowla Engineering Co., Ltd.
InventorsShigeyuki Matsumoto, Susumu Hotta
Life of this patent
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Abstract
The loose-flange type fitting according to the present invention is closely sealed with an elastic gasket whose both the sides and outer circumferential face are pressed against a pipe collars and a reinforcing ring so that the seal contact therebetween increases in degree together with rising of a tubeside internal pressure, in which the seal material comprising an annular elastic gasket, a metallic reinforcing ring disposed on the outer circumferential side of the elastic gasket and the inner circumferential face of the elastic gasket having substantially a V-shaped cross-section and the axial width of the gasket being broader than that of the reinforcing ring under non-compression conditions.
Claims13
A loose-flange type fitting, in which each edge of both pipes is flanged or each stub end is welded to the ends thereof and then both fitted loose flanges are connected and locked to each other while a seal material is arranged between the end faces of both the pipes, the seal material comprising:
- an annular elastic gasket;
- a metallic reinforcing ring disposed on the outer circumferential side of the elastic gasket;
- and
- the inner circumferential face of the elastic gasket having substantially a V-shaped cross-section and the axial width of the gasket being broader than that of the reinforcing ring under non-compression conditions.
A fitting assembly, in which a seal material is arranged between collars of both stub ends and then both fitted loose flanges are connected and locked to each other, the seal material comprising:
- an annular elastic gasket;
- a metallic reinforcing ring disposed on the outer circumferential side of the elastic gasket;
- and
- the inner circumferential face of the elastic gasket having substantially a V-shaped cross-section and the axial width of the gasket being broader than that of the reinforcing ring under non-compression conditions,
- both the stub ends being finally welded to the ends of the pipes, whereby the fitting assembly is built in a plumbing arrangement.
Dependencies are inferred from the claim text.