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.
The valve positioner is divided into pneumatic valve positioner, electro-pneumatic valve positioner and intelligent valve positioner according to the structure. It is the main accessory of the control valve. It is usually used in conjunction with the pneumatic control valve. It receives the output signal of the regulator and then uses its The output signal is used to control the pneumatic control valve. When the control valve is actuated, the displacement of the valve stem is fed back to the valve positioner through the mechanical device, and the valve position status is transmitted to the upper system through the electric signal.Valve positioners can be divided into pneumatic valve positioners, electro-pneumatic valve positioners, and intelligent valve positioners according to their structure and working principle. The valve positioner can increase the output power of the regulating valve, reduce the lag in the transmission of the regulating signal, accelerate the movement speed of the valve stem, improve the linearity of the valve, overcome the friction of the valve stem and eliminate the influence of unbalanced force. So as to ensure the correct positioning of the regulating valve.
According to the direction of action, it 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 valve positioner
acts on both sides of the cylinder of the piston type actuator and works from two directions.
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Add: EAA Central Industrial Zone,Wenzhou,Zhejiang Province,China