Angle of repose valve

Details Angle of repose valve Angle of repose valve

1992-05-28

1993-04-27

Warden, Robert J.

Chemical apparatus and process disinfecting, deodorizing, preser

Elements or adjuncts

222195, 222394, 222452, 222457, 222564, 251304, 427213, 427349, F27B 1509

Patent

active

052059987

ABSTRACT:
An apparatus and process for maintaining the purity of solid/granular product and dispensing high purity granular product from a vessel. A noncontaminating surface is provided by a cup, cylinder, or other structure having a surface of silicon, silicon carbide, silicon nitride, sialon, or similar materials and preferably operates as an angle of repose valve in a pressurized system to prevent contamination by undue contact of the high purity product with conventional gastight valves such as ball valves, butterfly valves, pinch valves, etc.

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