Patent ID: 8438910
Filing Date: 2013-05-14
Classification: F16K,G01N,Y10T

Abstract:
1. A shear valve for use in a high performance liquid chromatography system, the shear valve comprising: a first shear valve member and a second shear valve member, wherein at least one of the first and second shear valve members is adapted to be moved with respect to the other, one of the first and second shear valve members comprises a plurality of ports, and the other comprises at least one fluid path for fluidly coupling respective ones of the ports in dependency on a relative movement position of the first and second shear valve members with respect to each other, wherein the first shear valve member is at least partially coated with an adhesion-promoting layer and a diamond like carbon layer on the adhesion-promoting layer and an ion implantation layer on the diamond like carbon layer.