Brake valve arrangement, e.g. for operating trailer braking systems, applies control pressure to regulating piston when defined braking pressure region is reached to reduce braking pressure

摘要

The arrangement has a regulating piston (46) via which a brake connection (B) can be connected to a pump (P) or tank (T) connection and which is acted upon in the closing direction by a control spring (56) and in the opening direction by a regulating spring arrangement (60), whereby a pump (34) is driven depending on the braking pressure at the brake connection. A control arrangement applies a control pressure to the regulating piston when a defined braking pressure region is reached so that the braking pressure at the brake connection reduces to a level below the defined pressure region.