| 摘要 |
<p>An improved seal ring for sealing across the annular space between the exterior of a seat ring and the inner surface of a counterbore recess surrounding the entry of either the inlet or outlet into the valve chamber within the valve body, the seal ring including a pair of radially extending flanges connected by a tubular connector extending between the radial midportions of the flanges and the leading flange having inner and outer sealing surfaces which provide a high interference fit seal between the recess inner surface and the seat ring outer surface and the trailing flange having inner and outer sealing surfaces which provide a low interference fit seal between the recess inner surface and the seat ring outer surface. A spacer ring is provided to seat against the shoulder of the counterbore recess and retain the sealing flanges.</p> |
