Patent ID: 6073647
Filing Date: 2000-06-13
Classification: F16K,Y10T

Abstract:
A valve assembly, which comprises:a housing having a bore therethrough;a stem mounted within the bore of the housing for free rotation relative thereto and having an end within the bore:a first fluid-flow valve element located within the bore of the housing and coupled to the end of the stem for rotation therewith;the first valve element formed with a first-element surface which faces away from the stem when the stem is coupled to the first valve element;a second fluid-flow valve element fixedly attached within the bore of the housing adjacent a second end of the housing;the second valve element formed with a second-element surface which faces away from the second end of the housing;the second valve element formed with a first structure and the housing formed with a second structure within the bore thereof which is complementary in configuration to the configuration of the first structure to limit the assembly of the second valve element within the housing to a single orientation and position where the first-element surface will interface only with the second-element surface.