Control valve for automatic compressed-air brakes having a special valve housing

A control valve for automatic air brakes for forming a brake cylinder pressure in at least one connected brake cylinder according to a pressure difference between a pressure in a continuous main air line of a train and a stored reference pressure which is derived from the pressure of the main air line, the control valve comprising:

• valve structure for deriving a control pressure from the pressure of the main air line to generate a brake cylinder pressure for loading the brake cylinder, wherein the valve structure includes a short-stroke first piston system for providing the control pressure from the pressure of the main air line and a valve mechanism for generating the brake cylinder pressure;
• an acceleration member actuated by the short-stroke first piston system;
• and
• a second piston system for actuating the valve mechanism,
• wherein the acceleration member interacts in a common valve housing as the second piston system for actuating the valve mechanism, and
• wherein the second piston system has a longer stroke relative to the short-stroke first piston system,
• wherein the valve mechanism is a double seat valve and, wherein an actuated switching position which brings about a braking operation, loads the brake cylinder with a supply pressure which comes from a supply air reservoir.

A control valve for automatic air brakes for forming a brake cylinder pressure in at least one connected brake cylinder according to a pressure difference between a pressure in a continuous main air line of a train and a stored reference pressure which is derived from the pressure of the main air line, the control valve comprising:

• valve structure for deriving a control pressure from the pressure of the main air line to generate a brake cylinder pressure for loading the brake cylinder, wherein the valve structure includes a short-stroke first piston system for providing the control pressure from the pressure of the main air line and a valve mechanism for generating the brake cylinder pressure;
• an acceleration member actuated by the short-stroke first piston system;
• and
• a second piston system for actuating the valve mechanism,
• wherein the acceleration member interacts in a common valve housing as the second piston system for actuating the valve mechanism, and
• wherein the second piston system has a longer stroke relative to the short-stroke first piston system,
• wherein the common valve housing is attached releasably to a valve support which provides compressed air connections.