Pneumatic valve actuators adjust valve position by converting air pressure into linear or rotary motion. There are two main forms: the piston actuators and diaphragm actuators. Piston actuators are ...

YT-1000L Electro Pneumatic positioner is used for operation of pneumatic valve actuators by means of electrical controller or control system with an analog output ...

Develop a standard or standard(s) for valve positioner evaluation and performance criteria. Positioners may accept pneumatic or electric, or other inputs. Outputs may be pneumatic, or other, to ...