A pneumatic control mechanism, often used in applications where electrical switching is undesirable or unsafe, allows for the actuation of a device from two distinct locations. For example, this setup might involve two push-button actuators, each connected via small-diameter tubing to a central pneumatic valve. Pressing either button provides an air signal that shifts the valve’s state, initiating or terminating an action.
The deployment of such systems offers enhanced safety in environments with potentially explosive atmospheres or where the presence of water renders electrical systems hazardous. Historically, these types of controls have found application in environments such as chemical processing plants and locations with stringent requirements for preventing electrical sparks. The inherent design avoids electrical hazards, leading to increased reliability and a reduced risk of ignition.