| 摘要 |
The invention relates to a control-valve device (1) for an indirectly actuated compressed air brake for a railway vehicle producing a control pressure (A) by means of a vessel pressure (R) for a relay valve (2) which controls a pressure (HL) in a main air line according to said control pressure (A). Said invention is characterised in that the inventive control-valve device (1) comprises an adjusting valve (26) which adjusts the control pressure (A), is embodied in the form of an on-off valve and comprises at least one connection (24) for the control pressure (A) and a depression connection (28) and which, in a first switching position (a), closes the control pressure (A) connection and provides a fluid flow between a chamber (36) and the depression connection (28) and, in s second switching position (b), closes the depression connection (28) and provides a fluid flow between the control pressure (A) connection (24) and a chamber (36). |
