Aseptic valve with unitary valve seat and lip seals

Details Aseptic valve with unitary valve seat and lip seals Aseptic valve with unitary valve seat and lip seals

1984-12-10

1986-02-18

Walton, George L.

Fluid handling

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

Cleaning or steam sterilizing

137241, 251324, 251357, 277206A, B08B 300, F16J 1532

Patent

active

045706654

ABSTRACT:
A valve stem is reciprocable in an axial bore of a valve body toward and away from the valve seat. The valve plug has integral lip seals for preventing leakage of product out the valve and preventing entry of foreign matter into the valve along the stem. The valve plug has integral seating surfaces having small and large diameters for seating on valve seats having small and larger diameters, respectively and hence the valve plug can be used for different size valves. Steam flows through the bore around the stem to serve as a barrier to entry of foreign matter and to sterilize the zone behind the valve plug and the rearward lip seal.

REFERENCES:
patent: 2011547 (1935-08-01), Campbell
patent: 2047120 (1936-07-01), Stout
patent: 2263750 (1941-11-01), Willke
patent: 2876982 (1959-03-01), Snider
patent: 3110471 (1963-11-01), Kuhles
patent: 3176595 (1965-04-01), Schwartz
patent: 3290003 (1966-12-01), Kessler
patent: 3633607 (1972-01-01), Werra
patent: 4183500 (1980-01-01), Nightingale

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