The 4600 pneumatic valve positioner is mainly used to improve the linearity of the regulating valve, accelerate the action speed of the valve, overcome the unbalanced force on the regulating valve core, and achieve split range control. It is used in products such as ∑ F actuators and eccentric rotary valves, and has the advantages of simple structure, reliable action, easy maintenance, and variable regulating valve characteristics.

Technical specifications of 4600 pneumatic valve positioner
The feedback cam plate has multiple curve shapes, and by selecting different cam shapes, three characteristics can be obtained: straight line, equal percentage, and correction percentage.  
Zero position and proportional range adjustment are simple
Easy maintenance.  
The entire product only has the pilot valve as a moving component, which can be easily removed for maintenance or adjustment without disassembling any other parts of the locator. In addition, there is a bypass valve in the structure, which can still control the pilot valve during maintenance.  

structural principle
Structure: The locator consists of a valve body, a pilot valve component, a diaphragm component, a feedback component, etc.
Principle: Designed using the force balance principle of cam feedback. When the control signal of the regulator is sent to the signal chamber of the locator, the diaphragm drives the pilot valve to move to the left, and the output pressure of the locator increases, causing the actuator stroke to increase. At the same time, the actuator stroke passes through the feedback cam, causing the feedback spring pressure acting on the diaphragm to also increase. The diaphragm pushes the pilot valve to move to the right until the force of the signal on the diaphragm and the feedback spring pressure reach stability, achieving the corresponding relationship between the signal and the stroke.
The 4600 locator can easily achieve reaction by changing the cam installation method.