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Working principle of flow control valve

Working principle of flow control valve
The flow control valve, also known as the 400X flow control valve, is a multifunctional valve that uses high-precision pilot control to control flow. It is a valve that controls the flow of the throttle port by changing the size of the hydraulic resistance at the throttle port under a certain pressure difference, thereby adjusting the movement speed of the actuator. Suitable for pipelines where flow and pressure control is required in the distribution pipe, keeping the predetermined flow constant, limiting excessive flow to a predetermined value, and appropriately reducing upstream high pressure. Even if the pressure upstream of the main valve changes, it will not affect the flow downstream of the main valve. Flow control valves have the advantages of high control sensitivity, high safety and reliability, simple debugging, and long service life, and have been widely used.

2、 Working Principle of Flow Control Valves - Classification
The flow control valve can be divided into throttle valve, overflow throttle valve, speed control valve, diversion and collection valve, etc. according to its different functions; According to their different connection methods, they can be divided into flange type, threaded type, and welded type; According to the different control and adjustment methods, it can be divided into two types: automatic flow control valve and manual flow control valve. Regardless of the connection method, control and adjustment method, and the type of flow control valve that completes its function, it is generally installed horizontally.

3、 Working principle of flow control valve
The digital flow control valve mainly consists of three parts: automatic valve core, manual valve core, and display. Among them, the automatic valve core is mainly used to maintain a constant flow rate, that is, when the pipeline pressure changes, the automatic valve core will automatically open or close the valve port under the action of pressure to maintain the set flow rate value unchanged; The manual valve core is mainly used to adjust the flow rate, that is, to set the required flow rate value based on the displayed value; The display part is mainly used to process and display the final calculation results, which can be divided into flow valve movement, sensor transmitter and Calculator display part.

The working process of the flow control valve is roughly purplish. The measured water flows through the valve, and the water impacts the impeller in the flow movement. The impeller rotates and senses the sensor transmitter, so that the sensor sends an electrical signal proportional to the flow. The flow electrical signal is sent to the Calculator through the wire, and the flow value is displayed after calculation by the calculator and processing by the microprocessor.