| 摘要 |
<p>The present invention relates to improved rapid coupling for plastic pipes, capable of being assembled by hand, comprising two cylindrical tubular pieces which are connected axially together by interlocking, with the interposition of a double-lipped gasket, the female piece being the receiver of the end of the pipe, the penetration of which causes the expansion of the female piece on the male piece, thus producing a watertight seal which is the greater, the higher the service pressure.</p> |
