Products Details

Flow control valve is an important valve, which is mainly used to control the flow rate by changing the liquid resistance of the throttle under a certain pressure difference, so as to adjust the movement speed of the actuator. This kind of valve usually includes throttle valve, speed control valve, overflow throttle valve and shunt collector valve, etc. The installation form is mostly horizontal installation, and the connection mode can be flange type, thread type or welded type. The control adjustment mode is divided into automatic and manual two kinds.
​
Flow control valve is also known as 400X flow control valve, it uses high-precision pilot method to control flow, is a multi-functional valve. This valve is suitable for the need to control flow and pressure in the pipeline, can keep the predetermined flow unchanged, even when the upstream pressure of the main valve changes, it will not affect the downstream flow of the main valve.
​
In addition, the working principle of the flow control valve is to use the pilot valve to minimize the loss of energy in the throttling process, with high control sensitivity, safety and reliability, easy debugging and long service life. It can automatically achieve the flow balance of the system without an external power supply, and realize the flow limit by keeping the pressure difference between the front and back of the orifice plate, so it is also known as the constant flow valve.
​
When selecting a flow control valve, it is necessary to consider the medium temperature, working temperature, working pressure and working pressure difference of the valve, as well as flow accuracy and other technical parameters. For example, the medium temperature range is usually 0-150 ° C, the working temperature is 150 ° C, the working pressure is 1.6MPa, the working pressure difference is 20-600KPa, and the flow accuracy is 5%.
​
Self-operated flow control valve is a special regulating valve that can automatically adjust the flow rate without the need for external power. This valve in the closed water circulation system, such as hot water heating system and air conditioning refrigeration system, can easily achieve the flow distribution and dynamic balance of the system, simplify the commissioning of the system, and stabilize the working state of the pump.
​
When selecting and using the flow control valve, it is also necessary to pay attention to the installation position of the valve, the direction of the flow of the medium, whether the pressure difference at both ends of the valve is within the range of the working pressure difference, and regular maintenance and blowdown operations to ensure the normal operation of the valve and the efficiency of the system.