Air Filter Regulator EPV Series Electric proportional valve EPV3

Product overview

In the pneumatic control system, an ON-OFF directional valve with low action frequency is used to control the on-off of the gas path. Adjust the required pressure by pressure reducing valve and the required flow by throttle valve. If this traditional pneumatic control system wants to have multiple output forces and multiple moving speeds, it needs multiple pressure reducing valves, throttle valves and reversing valves. In this way, not only many components are needed, the cost is high, and the system is complex, but also many components need to be manually adjusted in advance. The electric proportional valve control belongs to continuous control, which is characterized by the change of output with the change of input (current value or voltage value), and there is a certain proportional relationship between output and input. Proportional control is divided into open-loop control and closed-loop control. Closed-loop control with signal feedback system.

Electro-hydraulic proportional valve is an element that the input voltage signal of proportional electromagnet in the valve produces corresponding action, which makes the valve core of the working valve shift and the size of the valve port change, so as to complete the pressure and flow output proportional to the input voltage. Valve core displacement can also be fed back in mechanical, hydraulic or electrical form. Electro-hydraulic proportional valve has many advantages, such as various forms, easy to form various electro-hydraulic systems controlled by electricity and computer, high control accuracy, flexible installation and use, strong anti-pollution ability and so on, and its application field is expanding day by day. The automatic selection and collection of electric proportional valves is quick, easy and optimal. The development and production of plug-in proportional valves and proportional multi-way valves fully take into account the characteristics of construction machinery, and have the functions of pilot control, load sensing and pressure compensation. Its appearance is of great significance to improve the overall technical level of mobile hydraulic machinery. In particular, electronic control pilot operation, wireless remote control and wired remote control operation have shown their good application prospects.