Valve Arrangement

A valve arrangement, particularly for pneumatically switching the supply of blowing air in a blow-moulding process, wherein the valve arrangement features a main valve with a switching piston that is guided in a valve housing and can be displaced relative to the valve housing between a first position, in which the main valve is closed, and a second position, in which the main valve is open, and wherein the switching piston features solely a control surface for control air that faces a control chamber of the valve housing and is configured to transmit a control force exerted by the control air acting in a direction or the first position onto the switching piston,

• characterized by
• wherein at least one bore that fluidically connects a control air switching chamber to the control chamber and makes it possible to introduce control air from the control air switching chamber into the control chamber in order to close the main valve, as well as to vent the control chamber via the control air switching chamber when the main valve is opened, wherein control air can be supplied to the control air switching chamber via a control air bore leading into the control air switching chamber, and wherein a venting bore leading into the control air switching chamber is provided and makes it possible to vent the control chamber when the main valve is opened.