| 摘要 |
<p>TAPPING SLEEVE A tapping sleeve for mounting on an in-service pipe under pressure in which a branch opening is to be formed. The sleeve comprises upper and lower sleeve halves, one of which supports an endless gasket adapted to provide a pressure seal about the branch opening in the pipe. Construction of the gasket comprises a metal reinforced elastomer rendering it self-sustain-ing against distortion blowout force of the pipeline enabling one standard sleeve construction to accommodate wide dimensional variations per unit pipe size.</p> |
