Valve

Details Valve Valve

1990-02-16

1992-01-07

Walton, George L.

Fluid handling

With cleaner, lubrication added to fluid or liquid sealing...

Cleaning or steam sterilizing

251214, 277 24, F16K 5100, B08B 102

Patent

active

050781758

ABSTRACT:
A valve comprises a first relatively fixed valve component assembly surrounding a second valve component assembly which is relatively movable within said first assembly. A seal is provided between the first and second valve component assemblies and a barrier assembly is provided for preventing particulate contaminant material reaching the seal. The barrier assembly comprises first and second barrier elements extending around said second valve component assembly. The first barrier element or elements are in engagement with the first valve component assembly and the second barrier element or elements are in engagement with the second valve component assembly. The barrier elements may be spring rings and form a labyrinth type seal between the two valve component assemblies.

REFERENCES:
patent: 2625413 (1953-01-01), Christensen
patent: 3352316 (1967-11-01), Zahn
patent: 3917223 (1975-11-01), Sidler
patent: 4054156 (1977-10-01), Benson
patent: 4408627 (1983-10-01), Harris
patent: 4773440 (1988-09-01), Yanagawa et al.
patent: 4878677 (1989-11-01), Larkins et al.
patent: 4886241 (1989-12-01), Davis et al.

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