Patent ID: 8864106

Claim:
A fluid control device, comprising: a valve body comprising an aperture, the aperture having a shoulder defining a first groove of the valve body and a first angled surface between the shoulder and an end of the aperture; and a valve seat comprising a positive retention for use with the fluid control device, the valve seat comprising: a metallic ring comprising a first inner circumferential surface and a first outer circumferential surface, the first outer circumferential surface comprising a first protrusion and a second angled surface, the first and second angled surfaces being non-parallel and non-perpendicular relative to an axis extending through the valve seat; and an elastomeric ring comprising a sealing surface, a second inner circumferential surface, and a second outer inner circumferential surface, the second inner circumferential surface comprising a second groove and a third angled surface, the second outer circumferential surface comprising a second protrusion and a fourth angled surface, the third and fourth angled surfaces being non-parallel and non-perpendicular relative to the axis extending through the valve seat, the sealing surface to be sealingly engaged by a flow control member of the fluid control device, the metallic ring being attached to the elastomeric ring prior to positioning the metallic ring and the elastomeric ring in the valve body of the fluid control device, the third angled surface of the elastomeric ring to matably engage the second angled surface of the metallic ring, the metallic ring disposed in an opening of the elastomeric ring and configured so that the metallic ring is not to engage the flow control member, the sealing surface to be positioned between the metallic ring and the valve body of the fluid control device prior to engagement of the flow control member with the sealing surface and during engagement of the flow control member with the sealing surface, the metallic ring to exert a radial force to the elastomeric ring to urge the first protrusion into the second groove, the second protrusion into the first groove, and the fourth angled surface to matably engage the first angled surface.