The decoration of the control valves is different, some of them are important for representing the whole machine. Positioners are the main decorations. Pneumatically machined valves rely on the positioner to receive an information signal from the procedure controller and convert it into a valve stroke. The solenoid valve complex is also a significant decoration of the control valve. The type of actuator and ideal protective action determine the correct selection of the solenoid valve. Solenoids can be used in double-acting cylinders or single-acting gastric drives.
Breakpoint switches are also conveniently connected to the control valve. Point switches operate discretely, contributing to an appropriate control structure, signal lights, small solenoid valves, electrical transmissions, or alerts.
Supply pressure regulators are commonly called air intakes, which can reduce the air supply from the plant to valve positioners and other control equipment. The central reduced air supply pressures are 20, 35, and 60 psi. The controller must be attached to the positioner, and the areole is connected or the darts to the drive.
Pneumatic locking frames are used with control valves to maintain the existing pressure when stacking the actuator in case of deviation of the supply pressure. These devices can be used with volumetric tanks to move the valve to the fully open or closed position when the pneumatic air supply is lost.
The electro-pneumatic converter receives the immediate flow sign and uses a torque motor, damper, and pneumatic switch to switch the electric sign to the relative pneumatic output signal. The nozzle pressure works by changing and is sent to the roar of criticism of engine torque to give an estimate between the input sign and the nozzle pressure. As it turned out, the sensor can be legally installed on the control valve and work with the valve without the need for additional sponsors or positioners. Also, electro-pneumatic positioners are used in electronic control circles to operate pneumatic actuators for the stomach control valve.