A coupling piece for coupling for fluid under pressure

摘要

One part (2) has a valve (14) which automatically opens when the part locates on the other (4). The lies within a housing (12) which prevents it from discharging when closed by keeping it free from axial pressure forces. An axially movable ring piston (46) in a screen (30) indirectly guides the valve and its shaft (16). This piston is sealed by one peripheral seal (48) against the screen and another (50) against the valve shaft.