Pneumatic pressure regulating valve for brake control system of rail vehicle and pneumatic control valve for brake control system of rail vehicle

The invention relates to a pneumatic pressure control valve (10) for a brake control system of a rail vehicle, comprising a first pressure chamber (11) to which a brake pressure (C) can be applied and a second pressure chamber (12) to which a predetermined adjustable pressure (R1) can be applied, the first pressure chamber (11) and the second pressure chamber (12) being sealed from one another by means of a pressure compensation piston (8), the pressure-equalizing piston (8) is designed to open a fluid connection from the first pressure chamber (11) to the exhaust duct (9) when the pressure in the first pressure chamber (11) acts on the pressure-equalizing piston (8) greater than the pressure in the second pressure chamber (12) acts on the pressure-equalizing piston (8). 本发明涉及一种用于轨道车辆的制动控制系统的气动的压力调节阀(10)，其具有能被加载制动压力(C)的第一压力腔(11)和能被加载预定的可调压力(R1)的第二压力腔(12)，第一压力腔(11)和第二压力腔(12)通过压力平衡活塞(8)彼此相对密封，并且所述压力平衡活塞(8)构造成用于，当第一压力腔(11)中的压力在压力平衡活塞(8)上的压力作用大于第二压力腔(12)中的压力在压力平衡活塞(8)上的压力作用时，打开从第一压力腔(11)到排气通道(9)的流体连接。