| 摘要 |
A screw-down mechanism (10) for a valve for a tap, the mechanism comprising a screw-down stem (12) locatable inside a valve housing (14), the base of the stem (12) being receivable in a valve seat (42), characterised in that the stem comprises an upper spline (20), coaxially mountable on a shaft (22), the lower portion of which is threaded (23), the base of the upper spline (20) including a first corrugated disk (24), engageable with a second corrugated disk (28) located on the shaft (22). |
