Patent ID: 6668861
Filing Date: 2003-12-30
Classification: F15B,F16K,Y10T

Abstract:
A pneumatic valve assembly comprising:a valve body having a pressurized air supply inlet port in fluid communication with a source of pressurized air; a valve bore extending axially within said valve body and a valve member movable between predetermined positions within said valve bore to selectively direct a flow of pressurized air from said inlet port through said valve bore to at least one outlet port; at least one valve element disposed upon said valve member, said at least one valve element being over-molded with a resilient material to provide an angular valve sealing surface; and at least one valve seat defined in said valve bore and formed at an angle oblique to said valve bore, said oblique angle measured relative to a radial line extending perpendicularly outward from the centerline of said valve member, such that said oblique angle is 2 to 3 degrees less than the corresponding angular measurement of said angular valve sealing surface, said valve sealing surface and said valve seat cooperating to form a surface seal such that said valve seat is in surface sealing contact with said valve sealing surface of said valve element when said valve member is in a closed position thereby interrupting said flow of pressurized air.