Which device is used to maintain constant pressure in a pneumatic control system?

In a pneumatic control system, a reducing valve is instrumental in maintaining constant pressure. It functions by adjusting the pressure of the air supplied to the system, ensuring that it remains stable regardless of fluctuations in supply or demand. This is crucial because pneumatic systems rely on consistent pressure to operate effectively and ensure that actuators perform their functions without interruption.

By regulating the downstream pressure, the reducing valve prevents scenarios that could lead to overpressure or underpressure in the system, thereby enhancing overall reliability and safety. This precise control is essential for processes that require specific pressure levels for accurate operation, making the reducing valve a key component in achieving and maintaining desired performance within pneumatic systems.