Sterilizable valve assembly for dispensing fluid materials and a method of operating the valve assembly
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United States of America Patent
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-
Dec 25, 1990
Grant Date -
N/A
app pub date -
Feb 20, 1990
filing date -
Feb 20, 1990
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A valve assembly having a diaphragm valve configured for efficient cleaning and sterilization, and a method for operating the valve assembly in a manner controlling the fluid material flow therethrough and for effecting cleaning thereof. The valve assembly includes a valve body defining inlet and outlet ports. The diaphragm valve is operably arranged between the ports. An actuator mechanism selectively positions the diaphragm valve relative to a valve seat defined by the valve body. A selectively operated clamping mechanism arranged on one side of the diaphragm valve develops a clamping force which is used to seal the diaphragm valve against an annular sealing surface area defined by the valve body. A cleaning system arranged on an opposite side of the diaphragm valve facilitates internal cleaning of the valve assembly, including the diaphragm valve and the annular sealing surface area upon release of the clamping force acting against the diaphragm valve.
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