| 摘要 |
A split clam shell valve for flow and metering of powder, semi-viscous, and granular materials includes a resilient slitted cover over a discharge outlet in an outer valve component. The valve is driven into an open position by the action of an inner valve component received within the outer valve component and movable relative to the cover for applying a force which opens the slitted cover. An elastic band engaging the cover, cooperating with the resilient material forming the cover, seals the slit to automatically close the valve when the force applied to the cover by the inner valve component is removed. The valve is particularly useful for automatically refilling containers with semi-viscous, powder and granular material to the same level in repeatable operating sequence.
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