Patent ID: 8876081
Filing Date: 2014-11-04
Classification: F16K,Y10T

Abstract:
1. A rotary shear valve assembly comprising: a stator device defining a substantially hard, substantially planar stator face and at least two or more stator channels in fluid communication with said stator face at corresponding stator ports; a rotor device having a substantially hard, substantially planar rotor face defining one or more rotor channels, each rotor channel having a channel outer edge generally oriented at a channel outer diameter; one of the stator face and the rotor face terminating at an outer circumferential edge, and the other of the rotor face and the stator face extending radially beyond the outer circumferential edge of the one stator face and the rotor face when said rotor device is rotatably mounted about a rotational axis to the stator device in a face-to-face contacting manner enabling fluid-tight, selective relative rotation between the rotor face and the stator face, at a rotor-stator interface, between two or more rotor positions; and a polymer insert device defining an exposed contact face having an insert inner diameter greater than said channel outer diameter and less than that of said outer circumferential edge, and an insert outer diameter more than that of said outer circumferential edge, said insert device being formed and dimensioned for press-fit insertion in a receiving groove defined in the other of the rotor face and the stator face such that the outer circumferential edge of the one of the stator face and the rotor face contacts the insert exposed face during said relative rotation between said two or more rotor positions.