Gastight isolation valve for solid materials

Details Gastight isolation valve for solid materials Gastight isolation valve for solid materials

1993-12-22

1997-10-14

Walton, George L.

Fluid handling

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

Cleaning or steam sterilizing

222148, 134166C, 251298, B08B 302, F16K 118

Patent

active

056761708

ABSTRACT:
A gastight isolation valve for solid materials is presented. The body of the valve has a lower edge which, defines, in the leaktight closed position, an air seal. The air seal is surrounded by a projecting element of the closure member which comprises, on the outer side, an outer peripheral flank having a first gradient. A peripheral sealing surface extends the outer peripheral flank. The sealing surface interacts with a sealing seat of the valve body to provide gastightness.

REFERENCES:
patent: 3075539 (1963-01-01), Yoder
patent: 3603339 (1971-09-01), Swain
patent: 3679193 (1972-07-01), Nieboer
patent: 4033549 (1977-07-01), Stamer
patent: 4505292 (1985-03-01), Osterode
patent: 4674922 (1987-06-01), Federhen et al.
patent: 4838301 (1989-06-01), Lamort

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