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Under what circumstances can the butterfly valve be used as a regulating valve
Release time:
May 28,2024
Butterfly valve is a common industrial valve, widely used in various fluid control systems. Its simple structure, convenient operation, low price, so in many occasions is used as a regulating valve. However, the butterfly valve is not suitable for use as a regulating valve in all cases, and needs to be selected according to the specific situation.
Structure and working principle of 1. butterfly valveThe structure of butterfly valve is mainly composed of valve body, valve plate, valve shaft and driving device. The valve plate is the core component of the butterfly valve, which controls the flow of fluid through the rotation of the valve shaft. When the valve shaft rotates, the valve plate rotates with it, thereby changing the cross-sectional area of the fluid channel to achieve the purpose of flow regulation.
Advantages of 2. butterfly valve as regulating valve
Simple (I) structureThe structure of the butterfly valve is relatively simple and does not require a complex actuator and control system, so the cost is low. The (II) is easy to operate. The operation of the butterfly valve is relatively simple, and it can be controlled by manual, electric, pneumatic, etc., which is convenient and quick.
Low (III) priceThe price of the butterfly valve is relatively low, so in some occasions with high cost requirements, such as some small fluid control systems, the butterfly valve has a greater advantage as a regulating valve.
Disadvantages of 3. butterfly valve as a regulating valve
Low (I) adjustment accuracyThe adjustment accuracy of the butterfly valve is relatively low, and it can only achieve rough flow adjustment, which cannot meet the requirements of high-precision flow control.
Poor (II) flow characteristicsThe flow characteristics of butterfly valves are poor and usually nonlinear, so flow fluctuations and instability are prone to occur during the flow adjustment process.
(III) limited scope of applicationThe scope of application of butterfly valve is limited, usually can only be used for some of the flow control requirements are not high, such as some small fluid control system.
4. butterfly valve can be used as a regulating valve
(I) flow control requirements are not high occasionsIn some of the flow control requirements are not high, such as some small fluid control system, you can use the butterfly valve as a regulating valve. The butterfly valve can be controlled manually or electrically to achieve rough flow regulation.
(II) fluid medium is relatively clean occasionsIn some of the fluid medium is relatively clean, such as some water treatment system, can use the butterfly valve as a regulating valve. The structure of the butterfly valve is simple and it is not easy to be stuck by impurities in the medium, so it can ensure long-term stable operation.
(III) on the occasion of high cost requirementsIn some of the higher cost requirements, such as some small fluid control system, you can use the butterfly valve as a regulating valve. The price of the butterfly valve is relatively low, which can reduce the cost of the system.
5. Conclusion
The butterfly valve can be used as a regulating valve, but it needs to be selected according to the specific situation. In some of the flow control requirements are not high, the fluid medium is relatively clean, the cost requirements are high, you can use the butterfly valve as a regulating valve. However, in some occasions with high requirements for flow control, such as some chemical, petroleum and other industries, it is usually necessary to use other types of regulating valves to achieve high-precision flow control.
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