Pipes and tubular conduits – With flow regulators and/or baffles – Restrictors
Patent
1982-08-02
1984-10-23
Bryant, III, James E.
Pipes and tubular conduits
With flow regulators and/or baffles
Restrictors
138 943, 251210, 13762533, F16L 5510
Patent
active
044782519
ABSTRACT:
An orifice fitting seal assembly is provided for use in an orifice fitting having a body structure defining a flow passage and opposed spaced sealing surfaces surrounding the flow passage. The improvement comprises a pair of internal seal rings of symmetrical configuration which cooperate to define a plate receptacle within which an apertured orifice plate is positioned. Each of the internal seal rings defines peripheral locking flanges that are disposed in spaced relation when the rings are in assembly. An external locking ring surrounds the assembled internal seal rings and establishes locking engagement therewith to retain the internal seal rings and the orifice plate in assembly. A pair of inner O-ring type sealing elements are retained within internal sealed grooves defined by each of the internal seal rings and the orifice plate. A pair of outer O-ring sealing elements are retained within outer modified dovetail grooves in each of the internal seal rings and serve to establish sealing engagement with the spaced sealing surfaces of the body structure. The orifice plate assembly is vented by vent passages from the back of the outer dovetail grooves to the exterior of the internal seal rings to enable relief of trapped gasses.
REFERENCES:
patent: 2214959 (1940-09-01), Hamer
patent: 2687748 (1954-08-01), Whalen
patent: 3126917 (1964-03-01), Hodgemon et al.
patent: 3780982 (1973-12-01), Kemp
patent: 3817287 (1974-06-01), Aitken
McEver, Jr. R. M.
Sanchez Ruben
Bryant III James E.
Daniel Industries Inc.
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