| 摘要 |
A flat-face quick coupling (1), comprising an outer tubular body (5) and a bushing (6) threaded in the tubular body for receiving, in an axially displaceable manner, a tubular element (8) coupled, in a per se known way, to means (11) for providing a flat-face quick coupling, by providing that the tubular element (8) is rigid with a tubular body (7) which, on an outer circumference thereof, comprises sealing ring elements (12, 13), that through a body of tubular element (8) a throughgoing hole (22) is formed, which, through a cross hole (20) communicates with a chamber (3) of the quick coupling (1), that the throughgoing hole (22) has a valve seat (23) which can be shut-off by a valve stem (24) preloaded by a spring (25), that the valve stem (24) comprises an extension (26) projecting into a chamber (28) formed between the tubular body (7) and tubular body (5), and that from the chamber (28) extends a throughgoing hole (30) connected to a discharging fitting (31).
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