In a pneumatic control system, the nozzle typically receives a regulated air supply pressure of approximately:

In a pneumatic control system, the nozzle is designed to operate effectively with a regulated air supply pressure that is approximately in the range of 140 kPa. This level of pressure is suitable as it balances the need for efficient actuation and control without causing undue stress on the components of the system.

Using a pressure around 140 kPa ensures that the pneumatic actuators and devices receive enough force to perform their tasks, such as moving valves or driving cylinders, while still maintaining safety and reliability.

The other pressure values provided would not typically be used in this context; for instance, 140 Pa is significantly too low to be functional for most pneumatic applications, while 20 kPa would also be inadequate for effective operation. Although 200 kPa is closer, it can be above the ideal operating range for many systems, potentially leading to issues with leakage or damage in sensitive components. Hence, 140 kPa represents the optimal and commonly accepted regulated air supply pressure for a pneumatic control system.