Patent ID: 7458559
Filing Date: 2008-12-02
Classification: F16K

Abstract:
1. A valve apparatus, comprising: a valve body; a first seat ring mounted in the valve body to define with the valve body a first retention groove having a first ear groove portion; a second seat ring mounted in the valve body to define with the valve body a second retention groove having a second ear groove portion; a retractable blade gate slidable along a linear axis in between the first seat ring and the second seat ring and movable along the linear axis between the enclosed positions; a first elastomeric ring held by and projecting from the first retention groove between the valve body and the first seal ring, and having one end projecting towards the gate blade, and another end having a first ear that projects into the first ear groove portion, wherein removal of the elastomeric ring from the first retention groove is inhibited by the interaction of the first ear and the first ear groove portion; and a second elastomeric ring held by and projecting from the second retention groove between the valve body and the second seal ring, and having one end projecting towards the gate blade, and another end having a second ear that projects into the second ear groove portion, wherein removal of the elastomeric ring from the first retention groove is inhibited by the interaction of the second ear and the second ear groove portion,