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Valve Locator

Valve locator, divided into pneumatic valve locator, electro-pneumatic valve locator and intelligent valve locator according to the structure, is the main accessory of the regulating valve. It is usually used in conjunction with the pneumatic regulating valve. It accepts the output signal of the regulator and then uses it The output signal is used to control the pneumatic regulating valve. When the regulating valve is activated, 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 electrical signal.

  Valve locator, divided into pneumatic valve locator, electro-pneumatic valve locator and intelligent valve locator according to the structure, is the main accessory of the regulating valve. It is usually used in conjunction with the pneumatic regulating valve. It accepts the output signal of the regulator and then uses it The output signal is used to control the pneumatic regulating valve. When the regulating valve is activated, 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 electrical signal.

  The input signal of the pneumatic valve positioner is the gas signal, for example, 20 ~ 100kPa; the input signal of the electric valve positioner is the standard current or voltage signal, for example, 4 ~ 20mA current signal or 1 ~ 5V voltage signal, etc. The electrical signal is converted into electromagnetic force inside the device, and then the gas signal is output to the toggle control valve; the intelligent electrical valve positioner converts the current signal output from the control room into the gas signal that drives the regulating valve, according to the valve stem friction when the regulating valve works Force, offset the unbalanced force generated by the pressure fluctuation of the medium, make the valve opening correspond to the current signal output by the control room, and can be intelligently configured to set the corresponding parameters to achieve the purpose of improving the performance of the control valve.


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