2-Wege-Einbauventil als Sitzventil

摘要

A two-way cartridge valve as lift valve comprises a valve sleeve (112) with a stepped guide bore (180, 182) for a valve piston (114). The valve piston (114) contains a piston extension (184) which axially subdivides the second step (182) of the guide bore into an end first control chamber (186) and an annular second control chamber (188). A first connecting passage (194) through the valve sleeve (112) connects the annular second control chamber (188) to an annular chamber (140) into which a lateral main-flow connection (30) leads. The free cross-section of a valve seat (144) and an axial main-flow bore (146) correspond approximately to the cross-section of the first step (180) of the guide bore.