Patent ID: 6991213

Claim:
A valve device for regulating flow of fluids, comprising: a first chamber defining part having a first opening for fluid flow; a first flexible diaphragm having two sides and mounted on one side in communication with said first chamber defining part, said first flexible diaphragm having a conductive surface and at least one opening in said surface for flow of fluid there through, a second chamber defining part having a second opening for fluid flow; a second flexible diaphragm having two sides and mounted on one side in communication with second chamber defining part, said second flexible diaphragm having a conductive surface and at least one opening in said surface, said at least one opening in said first diaphragm being offset from said at least one opening in said second diaphragm; a spacer element positioned between said first and second diaphragms and aligned to normally separate said first and second diaphragms to permit fluid flow through said at least one opening in both of said first and second diaphragms; and electrical connections contacting said first and said second flexible diaphragms and adapted to vary the capacitance between said diaphragms to cause said one flexible diaphragms to move with respect to said other of said flexible diaphragms such that said at least one hole in each diaphragms is sealed by contact with the closed surface of the other of said diaphragms.