Fluid handling – With cleaner – lubrication added to fluid or liquid sealing... – Cleaning or steam sterilizing
Patent
1997-09-30
2000-01-04
Walton, George L.
Fluid handling
With cleaner, lubrication added to fluid or liquid sealing...
Cleaning or steam sterilizing
137312, 13761417, 13761419, B08B 302, B08B 902
Patent
active
060098961
ABSTRACT:
A shut-off valve includes a valve housing having at least two mutually connecting chambers communicating with each other in each case via a passage opening bounded by a valve seat surface and provided with ports for feed and discharge of a medium. The shut-off valve includes a valve body which is provided with a closing surface co-acting with each valve seat surface for closing the associated passage opening and which is movable between a first position in which the closing surface is in sealing contact with the valve seat surface and a second position in which the closing surface is situated at a distance from the valve seat surface. Connecting onto either of the valve seat surface or the closing surface, at the position opposite which the other is situated close to the end of the movement from the second to the first position, is a slit-forming surface with at least one considerable axial directional component, and a plurality of notches is formed in the slit-forming surface.
REFERENCES:
patent: 1830407 (1931-11-01), Prenveille
patent: 3003423 (1961-10-01), Drutchas
patent: 3426798 (1969-02-01), Chernak
patent: 3857542 (1974-12-01), Heymann
patent: 4552167 (1985-11-01), Brakelmann
patent: 4605035 (1986-08-01), Rasmussen et al.
patent: 4655253 (1987-04-01), Ourensma
patent: 5645102 (1997-07-01), Brackelmann et al.
patent: 5649686 (1997-07-01), Wilson
Patent Abstracts of Japan, vol. 010, No. 193 (M-496), Jul. 8, 1986 & JP 61 038272A (Yamatake Honeywell Co Ltd), Feb. 24, 1986--Abstract.
Hovap International (Holland) B.V.
Walton George L.
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