Pneumatic valve

A pneumatic valve for controlling a volume flow of an operating gas supplied from a gas supply under pressure, comprising:

• a valve body having first and second ports for entry and exit of the operating gas, a main connection line for linking the ports, and a cross bore extending across the valve body and intersecting the main connection line;
• an adjustable throttle including a control element received in the cross bore for movement between first and second end positions and having a control opening for the operating gas with an effective area which progressively decreases from the first end position to the second end position, as the control element moves from the first end position toward the second end position, and a counterforce member opposing a movement of the control element toward the second end position;
• and
• a flow orifice disposed in the main connection line, wherein the throttle and the orifice are disposed in series in the main connection line, and
• wherein, as viewed in movement direction, the control element is acted upon on a side confronting the first end position by gas pressure commensurate with a gas pressure upstream of the orifice, and acted upon on a side confronting the second end position by gas pressure commensurate with a gas pressure downstream of the orifice, for controlling the effective area of the control opening in dependence on a difference between the gas pressures upstream and downstream of the orifice.