Fluid handling – Processes
Patent
1991-04-25
1992-01-14
Cohan, Alan
Fluid handling
Processes
137312, 137559, 251363, F16K 3700
Patent
active
050801201
ABSTRACT:
A valve with an O-ring, a disk seal, and a replaceable valve seat. A groove n the bottom of the valve seat flange forms an inner and outer drip ledge with the inner and outer periphery of the flange. If leakage occurs at the valve seat O-ring, fluid droplets will form on the outer drip ledge. If leakage occurs at the disk seal, fluid droplets will form on the inner drip ledge. A visual inspection of these drip ledges through an access port, or by a borescope placed in an inspection port, can discriminate between a leak which originates in the O-ring and a leak which originates in the disk seal.
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patent: 4901979 (1990-02-01), Garrigues
Cohan Alan
Connors, Jr. Edward J.
The United States of America as represented by the Secretary of
Townsend William C.
Weber Tamara L.
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