| 摘要 |
<p>A quick-coupling fitting for pipes comprises a female element (1) and a male element (2) that can be coupled together. The female element (1) comprises parts that are fixed (3, 4, 6, 9) and parts that can slide (10, 15) between a closed position and an open position of a passage for fluids (63, 61). The fixed parts (3, 4, 6, 9) comprise a stem (9) having one end enlarged (13), and the slidable parts (10, 15) comprise a bush (10), coaxial with the stem (9), axially slidable and elastically urged towards the closed position. The bush (10) defines with the stem (9) a hollow space (61) for the passage of the fluid. The bush (10) is provided with a sharp-edged metal annular projection (90) that, in the closed position, engages with a metal frustum-shaped surface (91) of the enlarged end (13) of the stem (9) to provide a seal of said hollow space (61). <IMAGE></p> |
