Patent ID: 7644731

Claim:
A gas valve comprising: a valve body having a valve cavity, wherein the valve cavity is defined by a valve cavity wall; a valve member disposed within the valve cavity, the valve member comprising a first disk and a second disk; a first groove formed within the valve cavity wall proximate the first disk; a second groove formed within the valve cavity wall proximate the second disk; a first elastomeric seal disposed within the first groove; a second elastomeric seal disposed within the second groove; wherein the first disk contacts the first elastomeric seal and the second disk contacts the second elastomeric seal when the valve member moves into the closed position; wherein at least one of the first elastomeric seal and the second elastomeric seal are structured to help center the valve member relative to the first elastomeric seal and/or the second elastomeric seal; and wherein the first elastomeric seal is substantially softer than the second elastomeric seal such that the first elastomeric seal may compress further in order to provide a better seal, while the second elastomeric seal may provide sufficient resistance to prevent excessive deformation and/or crushing of the first elastomeric seal.