High pressure oxygen valve

Details High pressure oxygen valve High pressure oxygen valve

2005-08-30

2005-08-30

Fox, John (Department: 3753)

Fluid handling

Systems

Multi-way valve unit

C137S625330

Reexamination Certificate

active

06935369

ABSTRACT:
A high pressure valve for oxygen service comprises a valve body (10) with a gas passage (12) and a valve seat (18) associated with the gas passage (12). An obturation unit (22) is movable between a first position, wherein it is spaced from the valve seat (18), and a second position, wherein it is seated on the valve seat (18). This obturation unit (22) has a sealing surface (24) that is in sealing contact with the seat surface (20) in said second position of the obturation unit (22). A metallic sealing element (32) and a synthetic sealing element (34) co-operate to form the sealing surface (24). The metallic sealing element (32) forms the sealing surface (24) around said inner border of the seat surface (20), and the synthetic sealing element (34) forms the sealing surface (24) towards the outer border of the seat surface (20).

REFERENCES:
patent: 2595012 (1952-04-01), Smith
patent: 3053500 (1962-09-01), Atkinson
patent: 4261389 (1981-04-01), Hager et al.
patent: 4688757 (1987-08-01), Cook et al.
patent: 5090450 (1992-02-01), Pelech et al.
patent: 1209831 (1966-01-01), None
patent: 1404566 (1968-10-01), None
patent: 1213152 (1970-11-01), None
patent: 2224335 (1990-05-01), None

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