Patent ID: 7373951
Filing Date: 2008-05-20
Classification: F16K,Y10T

Abstract:
1. A control valve comprising: a valve body having an inlet, an outlet, a flow passage extending between the inlet and the outlet, and defining a longitudinal axis, the valve body having a first thermal expansion coefficient; an internal valve component, at least a portion of which is fixed against displacement relative to the valve body, the valve component having a second thermal expansion coefficient different than the first thermal expansion coefficient; a seal having a C-shaped cross section and the seal contacting an outer surface of the valve component and an inner surface of the valve body, the C-shaped cross section of the seal includes an open part positioned to permit thermal expansion of the internal valve component relative to the valve body in a direction transverse to the longitudinal axis; and a retainer disposed immediately adjacent the seal and arranged to secure the seal against movement parallel to the longitudinal axis.