Patent ID: 6904935
Filing Date: 2005-06-14
Classification: F16K,Y10T

Abstract:
1. A first component of a disk valve, said first component having a sealing surface in sliding contact with a second component of said valve also having a sealing surface, said sealing surface of said first component having a sufficiently smooth conformal sealing surface to substantially prevent transmission of a fluid between each of said sealing surfaces, said first component comprising: a base material; a strengthening layer disposed on said base material and comprising a material harder than said base material, said strengthening layer having a thickness sufficient to improve the scratch resistance of said base material, said thickness being less than about 10 microns; and an amorphous diamond layer disposed on said strengthening layer, said amorphous diamond layer forming said sealing surface, and said amorphous diamond layer having a thickness of at least a value sufficient to improve the wear resistance of said first component.