YT1000L Electro Pneumatic Valve Positioner-Rotork

Type YT-1000L Electro-pneumatic valve positioner is used for operation of pneumatic linear valve actuators by means of electrical controller or control system with an analog output signal of DC 4 to 20 mA or split Ranges.

YT1000L Electro Pneumatic Valve Positioner-Data Sheet (PDF Download)

According to the direction of action,the electropneumatic valve positioner can be divided into one-way valve positioner and 

two-way valve positioner. 

When the one-way valve positioner is used in a piston type actuator,the valve positioner only works in  one  direction, and 

the two way electro pneumatic valve positioner acts on both sides of the cylinder of the piston type  actuator and works from  

two directions.

Valve positioner can also be classified according to the detection method of the feedback signal.

For example, valve positioners that use mechanical linkage to detect valve position signals; 

valve positioners that use Hall effect to detect displacement of valve stems; valve positioners that use 

electromagnetic induction to detect valve stem displacement.