A pressure control valve is a valve used to control and regulate the pressure of liquid flow in a hydraulic system. This type of valve works on the principle that the liquid pressure acting on the spool is balanced with the spring force.
In the hydraulic transmission system, the hydraulic valve that controls the oil pressure is called a pressure control valve, or pressure valve for short. What these valves have in common is that they work on the principle that the hydraulic pressure acting on the spool is balanced with the spring force.
The pressure control valve plays the role of pressure regulation and constant pressure in the system. It works by using the principle that the control oil is balanced with the spring. Its working state is directly affected by the control pressure, and its state changes. Find out the structure of each pressure valve, it is easy to master the working characteristics of the valve under different working conditions.
In a specific hydraulic system, according to work needs, the requirements for pressure control are different: some need to limit the maximum pressure of the hydraulic system; some need to stabilize the pressure value somewhere in the hydraulic system (or pressure difference, Pressure ratio, etc.), such as constant pressure valves such as relief valves and pressure reducing valves; others use hydraulic pressure as a signal to control their actions, such as sequence valves, pressure relays, etc.
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